Legality of drinking the wife's breast milk

Q 2: I have a friend who is living in the Republic of Egypt who asked me to write to your Eminence about something that happened to him. While he was having intercourse with his wife, he unintentionally got some milk in his mouth (Part No. 18; Page No. 396) from her breast. He immediately spat it out and rinsed his mouth well. Then, he turned to Allah (Exalted be He) in repentance regarding what had happened. He is now confused about what happened and whether his infant is now regarded as his son or his brother. Also, he would like to know the juristic ruling on his wife. I would be grateful if you (may Allah preserve you and increase you in knowledge) advise us on this matter according to the Islamic Shari`ah and the purified Sunnah. May Allah prolong your life for all Muslims to benefit from your religious knowledge.

A: There is no sin on your friend regarding the question of sucking milk from the breast of his wife. Also, this action does not make her unlawful to him and it has no influence on their marital life at all. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.