“Abu ‘Abd Allah (a.s.), has said that once a man with his wife came to ‘Umar and said, ‘My wife, this one, is black and I am more black. She has given birth to a white boy.’ ‘Umar asked those who were present with him about their opinion. They said, ‘We say that you must stone her to death because she is black and her husband is blacker and her child is white.’ He (the Imam) said that ’Amir al-Mu’minin came when she was sentenced to be stoned to death. He (the Imam) asked, ‘What is the case of the two of you?’ They informed him (the Imam) of their story.’ He asked the black man, ‘Do you accuse your wife?’ He replied, ‘No, I do not do so.’ He (the Imam) then asked, ‘Did you go to bed with her during her Hayd (menses)?’ He said, ‘One night she did say that she was experiencing Hayd (menses) but I thought she was avoiding cold weather, then I went to bed with her.’ He (the Imam) then asked the woman, ‘Did he go to bed with you when you were experiencing Hayd (menses)?’ She replied, ‘Yes, he did. You can ask him. I tried to avoid and refused.’ He (the Imam) said, ‘You both can go. Only blood has overwhelmed the seed and it turned white. Had it (blood) moved, he would become black but on becoming an adolescent he will become black.’”