The Sufficient (Vol 4) · Hadith 418 (#Ḥadīth #4)
Chapter 28 | The Case of a Fasting Person’s Use of Bath Room and Apply Cupping
4ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ الْحُسَيْنِ بْنِ سَعِيدٍ عَنِ الْقَاسِمِ بْنِ مُحَمَّدٍ عَنْ عَلِيِّ بْنِ أَبِي حَمْزَةَ عَنْ أَبِي بَصِيرٍ قَالَ سَأَلْتُ أَبَا عَبْدِ الله (عَلَيْهِ السَّلاَم) عَنِ الرَّجُلِ يَدْخُلُ الْحَمَّامَ وَهُوَ صَائِمٌ قَالَ لا بَأْسَ.
4. 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 from abu Basir who has said the following: “I once asked abu Ja‘far , about a man who uses the bathhouse when fasting. He (the Imam) said, ‘It is not harmful.’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).