Chapter on Breastfeeding
Man Lā Yaḥḍuruh al-Faqīh|Volume 3|Book 3|Chapter 47
وَ سَأَلَ عَلِيُّ بْنُ جَعْفَرٍ أَخَاهُ مُوسَى بْنَ جَعْفَرٍ عَلَيْهِمَا اَلسَّلاَمُ: عَنِ اِمْرَأَةٍ زَنَتْ هَلْ تَصْلُحُ أَنْ تُسْتَرْضَعَ قَالَ "لاَ تَصْلُحُ وَ لاَ لَبَنُ اِبْنَتِهَا اَلَّتِي وُلِدَتْ مِنَ اَلزِّنَا".
Ali ibn Ja'far asked his brother Imam Musa ibn Jafar Al-Kadhim عليه السلام about a woman who committed adultery - whether she is suitable to be taken as a wet nurse. He عليه السلام replied: "She is not suitable, nor is the milk of her daughter who was born from adultery."
- Ṣaḥīḥ al-Faqīh