Chapter on Breastfeeding
Man Lā Yaḥḍuruh al-Faqīh|Volume 3|Book 3|Chapter 47
رُوِيَ عَنْ سَمَاعَةَ بْنِ مِهْرَانَ عَنْ أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ قَالَ: "اَلرَّضَاعُ وَاحِدٌ وَ عِشْرُونَ شَهْراً فَمَا نَقَصَ فَهُوَ جَوْرٌ عَلَى اَلصَّبِيِّ".
It was narrated from Sama'ah ibn Mihran that Abu Abdullah عليه السلام said: "Breastfeeding is for twenty-one months, and anything less than that is an injustice to the child."
- Ṣaḥīḥ al-Faqīh