الرَّضَاعُ وَاحِدٌ وَ عِشْرُونَ شَهْراً فَمَا نَقَصَ فَهُوَ جَوْرٌ عَلَى الصَّبِيِ[1].
Hadith.4661 - It was narrated from Sama'ah ibn Mihran that Abu Abdullah (as) said: "Breastfeeding is for twenty-one months, and anything less than that is an injustice to the child."