One of matters that are emphasized in the religion of the Islam involves religious jurisprudence rules and paying attention to the orders and the prohibitions of God because persons have to accept the rules of God in order to foster their talents and abilities and to achieve desirable perfection.
Moreover, moral rules should be emphasized in the Islam because there is a close relationship between religious jurisprudence rules and moral rules. In other words, each rule influences the other one. For example, fasting is one of necessary rules in the Islam and all of the Islamic religions have accepted it as a necessary affair in the religion. As it has been said in the narration, fasting is one of basics of the religion . This rule of God has a lot of effects on the social and personal life and the afterworld.
One of effects that have been mentioned about it in Quran is belief in God;
«يا أَيُّهَا الَّذينَ آمَنُوا كُتِبَ عَلَيْكُمُ الصِّيامُ كَما كُتِبَ عَلَى الَّذينَ مِنْ قَبْلِكُمْ لَعَلَّكُمْ ).
It is confirmed in this verse that there is a reliable relationship between fasting and belief in God. In other words, a Muslim that fasts strengthens his or her belief in God. This belief in God provides a ground that persons can benefit from the customs and the secrets of this rule of God. Relationship between fasting and thanking or relationship between fasting and bliss is referred in other verses; each one expresses this reality that there is a deep and close relationship between them.
This reality can be understood from relationships between religious and moral rules that first, these two rules have mutual effect on each other and are related to each other. Second, there are kinds of necessities and obligations in both of them. Consequently, both of them have crucial roles in the happiness and the perfection of persons.
As a general, it can be said that Quran determines religious jurisprudence rules according to the benefits and the disadvantages of actions and their effective results on the promotion and the growth of the personality of human and has considered them obligatory and has considered the effects of these rules the formation of moral affairs. Moreover, we can insist on this claim that most of moral affairs are considered as the purposes of jurisprudence. Paying attention to most of the verses of Quran, we can understand that Quran emphasizes on this belief as sacred Surah of Maaede  states
«وَتَعاوَنُواعَلَى الْبِرِّ وَالتَّقْوى‏ وَلاتَعاوَنُواعَلَى الْإِثْمِ وَالْعُدْوانِ وَاتَّقُوا اللَّهَ إِنَّ اللَّهَ شَديدُالْعِقاب‏».
According to these verses, moral and religious jurisprudence rules are related to each other and there is no separation between them such as the following verse
 «إِنَّ اللَّهَ يَأْمُرُبِالْعَدْلِ وَالْإِحْسانِ وَإيتاءِ ذِي الْقُرْبى ‏وَيَنْهى‏ عَنِ الْفَحْشاءِ وَالْمُنْكَرِ وَالْبَغْيِ يَعِظُكُمْ لَعَلَّكُمْ تَذَكَّرُون
As it can be understood from this verse, fairness and benevolence have equal value and exalted God recommends both of them to human.
The effect of praying on the formation of moral values:
In this part, it is appropriate to refer to a deep relationship between prayer and most of moral affairs. Praying includes rules, customs and secrets and each one includes a lot of matters and discussions. Paying attention to the effects of praying, we can understand this important point that praying has a crucial role on training the soul of human and helps human to get closer to God. Moreover, it gets persons away from vices such as vanity and jealousy, strengthens the soul of human and saves human from the temptations of Satan. Praying also strengthens the modesty and humility of human and promotes their religious and spiritual position. All of these effects have been mentioned in verses and narrations. This important matter can be understood from these effects that praying as an important obligation has an important role in growing virtues and avoiding vices.
But we can claim that morals and religious values are effective in improving culture, providing good relationships among persons in the society and modifying their relationships as much as it provides a ground to implement religious and legal obligations such as devotions, trades and social rules.
In fact, the society without moral principles separates from social and personal personality of human and can never recognize its responsibilities properly and follows them. Hence, Quran obliges a Muslim to fulfill obligations and considers giving them up the cause of deprivation of happiness and bliss. Quran has such rules in relation to morals and emphasizes on moral rules such as religious jurisprudence rules and law rules so that the society of human moves in the path of happiness decently and achieves desirable perfection.
Of course, if most of moral problems are not surveyed legally, its reason is not that human does not have any responsibilities against them, but its reason is that spiritual matters are different from the area of social and law obligations; hence, Quran expresses that society that follows law and jurisprudence obligations and responsibilities as well as moral ones achieves happiness. Hence, we should deal with both of rules so that we can achieve happiness and bliss. Therefore, it has been said in Quran
«هُوَالَّذي بَعَثَ فِي الْأُمِّيِّينَ رَسُولاً مِنْهُمْ يَتْلُوا عَلَيْهِمْ آياتِهِ وَيُزَكِّيهِمْ وَيُعَلِّمُهُمُ الْكِتابَ وَالْحِكْمَةَ وَإِنْ كانُوامِنْ قَبْلُ لَفي ‏ضَلالٍ مُبين‏» 
In fact, the mission of the prophet (peace of Allah be upon him and his descendants) is the combination of these two kinds of rules as well as training book, wisdom, refinement and purification. A person can achieve bliss and happiness with this purification.
« قَدْأَفْلَحَ مَنْ زَكَّاها 
Following law and jurisprudence rules that God and his messenger issue leads human to happiness and bliss.
« مَنْ يُطِعِ اللَّهَوَرَسُولهُ فَقَدْ فازَفَوْزاًعَظيما» 
In fact, these rules help persons to have relationships with themselves and the community properly and recognize right path from wrong path according to religious norms. Consequently, having such point of view toward the religion can be understood that Islam has enacted rules and regulations in order to control the relationship of persons with themselves, others and God so that persons do not have problem in recognizing right path in the life and try to achieve to perfection that they have been created for with fulfilling their obligations.
Reviewing holy verses can be understood that a person has some obligations in each situation so that a person can act according to religious beliefs and moral principles and they do not go awry. Of course, it is completely clear that the rules and the regulations are not impractical and cliché, but if we focus on its philosophy, it turns out that they are according to the nature of God and they are not obligatory as it has been said in the sacred verse
لَقَدْ أَرْ‌سَلْنَا رُ‌سُلَنَا بِالْبَيِّنَاتِ وَأَنزَلْنَا مَعَهُمُ الْكِتَابَ وَالْمِيزَانَ لِيَقُومَ النَّاسُ بِالْقِسْطِ
In this verse, the word '' Layaghum'' has been used, but the word '' Layaghim'' has not been used. Their difference is that the former is not obligatory. In other words, if someone recognizes the rule of God properly, he or she will try to implement it and will not have to do it since it is based on nature. In fact, it can be understood from this word that all of the rules of God have been enacted according to common nature among persons.
Hence, exalted God has said in another verse
فاقم وجهک للدین حنیفاً
Tendency to the right path is in your inner, focus on the right religion''. God also states in the rest of the verse
فطرت الله التی فطر الناس علیها
All of the rules are based on the creation of the nature of human; therefore, it is clear that the nature of God is not changeable and it exists in the inner of all human.
لا تبدیل لخلق الله
Therefore, this point is necessary in the rules of God. According to these verses, it can be proved that the orders of God are natural and we can accept that this is a great blessing that has been reminded several times in the sacred Surah of Al-Rahman so that we do not forget the blessings of God. Hence, God has stated in different verses of this Surah
فَبِأَيِّ آلَاءِ رَ‌بِّكُمَا تُكَذِّبَانِ
Repeating the verses admonishes us that we recognize the blessings of God and thank them. It is completely clear that if we look at the rules of God carefully, this can be understood that the rules of God that are enacted for human are the best blessing after different aspects of the nature of human. The kindness and the blessing of God are as much as the prophet (peace of Allah be upon him and his descendants) and innocent Imams (peace be upon them) have been appointed and chosen in order to enact the rules, interpret the verses of God and show us the right path so that we do not go awry.
A lot of matters were presented about relationship between morals and Sharia from the point of view of Quran and narrations. However, since praying is emphasized as one of important bases of the religion in all of the religions of God and is considered as a necessary affair in the religion, it seems that matters should be presented about relationship between this obligation of God and morals and spirituality.
It can be understood from the verses and the narrations that persons have been created for this main purpose in order to achieve the reality. Exalted God has considered all of grounds of achieving the reality for human. One of means that has the most important role in the religion is praying. In fact, praying is the most means and the string of achieving the reality and God and it is completely clear that if a person achieves such a situation, he or she has gained the basis of spirituality that is closeness to God and the spiritual life.
Praying is important because this obligation of God helps human to ascend the peak of spirituality and morals and it is considered as the best treatment for healing spiritual and mental problems. Likewise, praying can somewhat determine the faith and the monotheistic rank of human because persons can observe the beauty of God with their hearts and senses through praying and every day they present the reality of paying attention to exalted God several times and show the rank of closeness to God and lovers show their spiritual presence to their beloved creator.
Praying has an absolute role in unity and rightness. A believer that prays can achieve the highest rank and the peak of spirituality that is assurance paying attention to the names and the attributes of God.
This matter is presented in the Islamic mysticism in detail; if persons want to achieve the reality and beautiful inner, they should pass the path of Sharia and the rules of God because Sharia is only means of achieving reality and spirituality until the last moment of the life. Hence, this is a false imagination that if someone achieves certainness, reality and the peak of spirituality through Sharia, he or she will be needless of Sharia and the path because even if a person achieves the peak of spirituality, there will be some ranks in the peak of spirituality that involve knowing the way of living and Sharia more than the past. Moreover, threats appear in each rank differently; hence, we need shelter and resort more so that persons can resort to him in each stage and rank. And God shelters persons in all stages of religious path.
Praying that is fulfilled carefully with all of its conditions increases the presence of heart and faith in God and fascinates human the beauty and the greatness of God.