The Sufficient (Vol 5) · Hadith 1813 (#Ḥadīth #7)

7- عَلِيُّ بْنُ مُحَمَّدِ بْنِ بُنْدَارَ عَنْ أَحْمَدَ بْنِ أَبِي عَبْدِ اللهِ عَنْ أَبِيهِ عَنْ عَبْدِ اللهِ بْنِ الْقَاسِمِ عَنْ عَبْدِ اللهِ بْنِ سِنَانٍ قَالَ قَالَ أَبُو عَبْدِ اللهِ اتَّقُوا الْكَلامَ عِنْدَ مُلْتَقَى الْخِتَانَيْنِ فَإِنَّهُ يُورِثُ الْخَرَسَ.

7. Ali ibn Muhammad ibn Bandar has narrated from Ahmad ibn abu ‘Abd Allah from his father from ‘Abd Allah ibn al-Qasim from ‘Abd Allah ibn Sinan who has said the following: “Abu ‘Abd Allah , has said, ‘Beware of speaking when two sexual organs meet; it may cause dumbness and muteness.’”

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).