The Sufficient (Vol 3) · Hadith 1243 (#Ḥadīth #6)
Chapter 26 | Minimum and Maximum Tasbih in Ruku‘ and Sajdah
6ـ عَلِيُّ بْنُ مُحَمَّدٍ عَنْ بَعْضِ أَصْحَابِنَا عَنْ مَرْوَكِ بْنِ عُبَيْدٍ عَنْ بَعْضِ أَصْحَابِهِ عَنْ أَبِي جَعْفَرٍ (عَلَيْهِ الْسَّلام) قَالَ قُلْتُ لَهُ إِنِّي إِمَامُ مَسْجِدِ الْحَيِّ فَأَرْكَعُ بِهِمْ فَأَسْمَعُ خَفَقَانَ نِعَالِهِمْ وَأَنَا رَاكِعٌ فَقَالَ اصْبِرْ رُكُوعَكَ وَمِثْلَ رُكُوعِكَ فَإِنِ انْقَطَعَ وَإِلاَّ فَانْتَصِبْ قَائِماً.
6. Ali ibn Muhammad has narrated from certain persons of our people from Marwak ibn ‘Ubayd from certain persons of his people who has said the following: “I once said to abu Ja‘far , ‘I am an Imam of the village. During Salah (prayer) I hear the sound of their shoes walking when I am in Ruku‘ (bowing down on one’s knees).’ He (the Imam) said, ‘Wait in your Ruku‘ for the length of your Ruku‘ until the sound stops, otherwise, you can rise to stand up straight.’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).