The Sufficient (Vol 5) · Hadith 1512 (#Ḥadīth #3)
Chapter 62 | Age Limit of Conjugal Relations (Consult Fatwah about the contents of this chapter)
3- حُمَيْدُ بْنُ زِيَادٍ عَنِ الْحَسَنِ بْنِ مُحَمَّدِ بْنِ سَمَاعَةَ عَنْ صَفْوَانَ بْنِ يَحْيَى عَنْ مُوسَى بْنِ بَكْرٍ عَنْ زُرَارَةَ عَنْ أَبِي جَعْفَرٍ قَالَ لا يُدْخَلْ بِالْجَارِيَةِ حَتَّى يَأْتِيَ لَهَا تِسْعُ سِنِينَ أَوْ عَشْرُ سِنِينَ.
3. Humayd ibn Ziyad has narrated from al-Hassan ibn Muhammad ibn Sama‘ah from Safwan ibn Yahya from Musa ibn Bakr from Zurarah from abu Ja'far who said: "One should not have sex with a female servant until she reaches nine years of age or ten years of age."
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).