Al-Kāfi - The Book of Wills

Chapter: The Will about Something of One’s Legacy َّدُ بْنُ يَحْيَى عَنْ أَحْ٠َّدِ بْنِ عِيسَى عَنِ ابْنِ فَضَّالٍ أَوْ غَيْرِهِ عَنْ جَ٠ِيلٍ عَنْ أَبَانٍ عَنْ عَلِيِّ بْنِ الْحُسَيْنِ (عَلَيْهِ٠) قَالَ سُئِلَ عَنْ رَجُلٍ أَوْصَى بِشَيْ‏ءٍ ٠َالِهِ قَالَ الشَّيْ‏ءُ فِي كِتَابِ عَلِيٍّ (عَلَيْهِ السَّلا٠2.

Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad ibn ‘Isa from ibn Faddal or others from Jamil from Aban who has narrated the following: “Ali ibn al-Husayn, ‘Alayhim al-Salam, was asked about the case of a man who made a will about something of his wealth. He (the Imam) said, ‘According to the book of Ali (a.s.), it is one-sixth.’” رسل - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (3/68))