الحسن بن أبي حمزة

"I said to Abu Ja‘far or Abu Abdullah (as): 'Can I delay fasting the three days of the month in the summer until the winter, as I find it easier for me then?' Imam (as) said: 'Yes, but make sure to observe it.'"

“O Abu Hamza, the earth does not remain devoid of a scholar from us, Ahle Bayt, who may point out if people commit excess in religion and if they are deficient. And Allah does not allow this scholar to leave the world till he has not left a successor from his progeny, who has the same knowledge.”