“Concealing faith is a part of God's religion.” He was asked: “Is it a part of God's religion?” He replied: “Yes, I swear by God that when Joseph said: “Behold! Ye are thieves, without doubt!” [The Holy Quran: Yusuf 12:70], they had not really stolen anything. And also when Abraham said he was ill and would not attend the party, “I am indeed sick (at heart)!” [The Holy Quran: Saffat 37:89], by God he was not ill.”