يَا أُمَّ إِسْحَاقَ لَا تُرْضِعِيهِ مِنْ ثَدْيٍ وَاحِدٍ وَ أَرْضِعِيهِ مِنْ كِلَيْهِمَا يَكُونُ أَحَدُهُمَا طَعَاماً وَ الْآخَرُ شَرَاباً.
“Abu ‘Abd Allah (a.s.), once looked to me when I was breastfeeding one of my sons, Muhammad or Ishaq and he (the Imam) said, ‘O ‘Umm Ishaq, do not breastfeed him from one breast only. Breastfeed him from both breasts; one is food and the other is the drink for him.’”