Chapter on Revoking a Bequest
Man Lā Yaḥḍuruh al-Faqīh|Volume 4|Book 1|Chapter 93
وَ رَوَى مُحَمَّدُ بْنُ أَبِي عُمَيْرٍ عَنْ بُكَيْرِ بْنِ أَعْيَنَ عَنْ عُبَيْدِ بْنِ زُرَارَةَ قَالَ سَمِعْتُ أَبَا عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ يَقُولُ: "لِلْمُوصِي أَنْ يَرْجِعَ فِي وَصِيَّتِهِ إِنْ كَانَ فِي صِحَّةٍ أَوْ مَرَضٍ".
Muhammad ibn Abi Umayr narrated from Bukayr ibn Aʿyan from Ubayd ibn Zurarah, who said: I heard Abu Abdullah Imam Jafar ibn Muhammad Al-Sadiq عليه السلام say: "The one making a will has the right to revoke it, whether he is in good health or ill."
- Ṣaḥīḥ al-Faqīh, p. 340