The Source of Traditions on Imam al-Riḍā (Vol 1) · Hadith 237 (#Ḥadīth #29)

29 - حَدَّثَنا أَبي رَضِىَ اللهُ عَنْهُ قالَ: حَدَّثَنا مُحَمَّدِ بْنِ يَحْيَى العَطَّار، عَن مُحَمَّدِ بْنِ الحُسَيْنِ بْنِ أَبي الخَطَّاب، عَن عَلِىِّ بْنِ أَسْباط، عَن مُحَمَّدِ بْنِ عَلِىِّ بْنِ أَبِي عَبْدِ اللَّه، عَن أَبِي الْحَسَنِ a.sُ فِي قَوْلِ اللَّهِ عَزَّ وَجَلَّ وَرَهْبانِيَّةً ابْتَدَعُوها ما كَتَبْناها عَلَيْهِمْ إِلا ابْتِغاءَ رِضْوانِ اللَّهِ قَالَ صَلاةُ اللَّيْلِ.

28-29 (The author of the book narrated) my father - may God be pleased with him - narrated that Muhammad ibn Yahya al-Attar quoted on the authority of Muhammad ibn Al-Hussein ibn Abil Khattab, on the authority of Ali ibn Asbat, on the authority of Muhammad ibn Ali ibn Abi Abdullah, on the authority of Abil Hassan (Imam Ridha) (s), “What is meant by the following Words of the Honorable the Exalted God - ‘…But the Monasticism which they invented for themselves, We did not prescribe for them: (We commanded) only the seeking for the Good Pleasure of Allah…’ - is night prayers.”

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