Al-Kāfi - The Book of Wills

Chapter: Will in Favor of Mothers of Children َّدُ بْنُ يَحْيَى عَ٠َّنْ ذَكَرَهُ عَنْ أَبِي الْحَسَنِ الرِّضَا (عَلَيْهِ السَّلا٠ِّ الْوَلَدِ إِذَا ٠َوْلاهَا وَقَدْ أَوْصَى لَهَا قَالَ تُعْتَقُ فِي الثُّلُثِ وَلَهَا الْوَصِيَّةُ. 3.

Muhammad ibn Yahya has narrated from those whom he has mentioned who have narrated the following: “About the case of the mother of a child, when her master dies who has made a will for her, abu al- Hassan, al-Rida’ (a.s.), has said, ‘She becomes free in one-third and the will belongs to her.’” رسل - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (23/48))