Hadith.4662 - Sa'd ibn Sa'd asked Imam Ali ibn Musa Ar-Ridha (as) about whether a child can be breastfed for more than two years.
Imam (as) replied: "Two years."
I asked: "If it exceeds two years, is there any obligation upon the parents because of that?"
Imam (as) said: "No."
Al-Kāfi #164“I once asked al-Rida’ (a.s.), about the case of a child; if he can be breastfed for more than two years. He (the Imam) said, ‘It is two...