The thinking that is deep and real; and it is not shallow and just looks at the surface mixed with love of the world or wanting to occupy high positions like Omar Saad who used to think night and day about it and then reached the conclusion that: The wise person cannot change cash with credit! This world and the rule of Rey (a large and prosperous Persian town in old times) are cash and paradise and hell are on credit. Therefore, he prepared himself (Omar Saad) to fight Imam Hussain (AS). The holy Quran curses this type of thinkers as mentioned in Ayahs 18 and 19 of Surah Al-Muddaththir: “For the thought and he plotted; and woe to him! How he plotted.”