The Sufficient (Vol 7) · Hadith 102 (#Ḥadīth #3)
Chapter 21 | The Will of Immature Boys and Girls, the Lawful and Unlawful Matters in it
3- الْحُسَيْنُ بْنُ مُحَمَّدٍ عَنْ مُعَلَّى بْنِ مُحَمَّدٍ عَنْ بَعْضِ أَصْحَابِهِ عَنْ أَبَانِ بْنِ عُثْمَانَ عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي عَبْدِ اللهِ قَالَ قَالَ أَبُو عَبْدِ اللهِ إِذَا بَلَغَ الْغُلامُ عَشْرَ سِنِينَ جَازَتْ وَصِيَّتُهُ.
3. Al-Husayn ibn Muhammad has narrated from Mu‘alla’ ibn Muhammad from certain persons of his people from Aban ibn ‘Uthman from ‘Abd al-Rahman ibn abu ‘Abd Allah who has narrated the following: “Abu ‘Abd Allah , has said, ‘When a boy becomes ten years old his will is permissible.’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).