The Sufficient (Vol 3) · Hadith 31 (#Ḥadīth #11)
Chapter 4 | The Case of a Well and Things that May Fall in It (Fatwa best explains Ahadith 2-12 as well as the following chapter.)
11ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ الْحُسَيْنِ بْنِ سَعِيدٍ عَنِ الْقَاسِمِ بْنِ مُحَمَّدٍ عَنْ عَلِيِّ بْنِ أَبِي حَمْزَةَ قَالَ سَأَلْتُ أَبَا عَبْدِ الله (عَلَيْهِ الْسَّلام) عَنِ الْعَذِرَةِ تَقَعُ فِي الْبِئْرِ قَالَ يُنْزَحُ مِنْهَا عَشَرَةُ دِلاَءٍ فَإِنْ ذَابَتْ فَأَرْبَعُونَ أَوْ خَمْسُونَ دَلْواً.
11. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from al-Husayn ibn Sa‘id from al-Qasim ibn Muhammad from Ali ibn abu Hamzah who has said the following: “I once asked abu ‘Abd Allah, Alayhi al-Salam, about the falling of feces into a well. He (the Imam) said, ‘Ten buckets of water must be taken out and if it has disintegrated then forty or fifty buckets of water must be taken out.’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).