Imam’s friend started researching by asking questions from the family of that lady and became aware that she is from Bani Shayban tribe and she belonged to a noble family.
Then that friend came to Imam Sajjad (AS) and said: I was worried about your marriage to this lady and said to myself: Imam is marrying an unknown lady and people also said the same thing, until I researched and found out that she is from a noble family.
Imam Sajjad (AS) said: I thought you were brighter than this. Beware that God removes ignobility because of Islam and transforms defect into accomplishment, and changes miser into generous. Therefore, a Muslim is not ignoble, and ignobility belongs to ignorance era [1].
[1] Awalem, Bahrani, Vol. 18, Page 209.