The Sufficient (Vol 6) · Hadith 2074 (#Ḥadīth #7)

أَبُو عَلِيٍّ الْأَشْعَرِيُّ عَنْ بَعْضِ أَصْحَابِهِ عَنْ مُحَمَّدِ بْنِ خَالِدٍ الطَّيَالِسِيِّ عَنْ عَلِيِّ بْنِ أَبِي حَمْزَةَ عَنْ أَبِي بَصِيرٍ عَنْ أَبِي عَبْدِ اللَّهِ ( عليه السلام ) قَالَ مَنْ لَبِسَ السَّرَاوِيلَ مِنْ قُعُودٍ وُقِيَ وَجَعَ الْخَاصِرَةِ .

7. Abu Ali al-Ash‘ariy has narrated from certain persons of his people from Muhammad ibn Khalid al-Tayalisy from Ali ibn abu Hamzah from abu Basir who have said the following: “Abu ‘Abd Allah , has said, ‘If one wears a loincloth in a sitting position, he remains safe from lower back pain.’”

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