Chapter on Oaths, Vows, and Expiations
Man Lā Yaḥḍuruh al-Faqīh|Volume 3|Book 2|Chapter 38
وَ رَوَى مُحَمَّدٌ اَلْحَلَبِيُّ عَنْ أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ قَالَ: "لاَ يَجُوزُ فِي اَلْقَتْلِ إِلاَّ رَجُلٌ وَ يَجُوزُ فِي اَلظِّهَارِ وَ كَفَّارَةِ اَلْيَمِينِ صَبِيٌّ".
Muhammad al-Halabi narrated from Abu Abdillah عليه السلام who said: "In cases of murder, only an adult man is permissible for expiation. However, in cases of ẓihar and the expiation of oaths, a young boy is permissible."
- Ṣaḥīḥ al-Faqīh, p. 267