The Sufficient (Vol 3) · Hadith 682 (#Ḥadīth #4)
Chapter 49 | Performing Salah (Prayer) for a Dead Person without Wudu’
4ـ أَبُو عَلِيٍّ الأشْعَرِيُّ عَنْ مُحَمَّدِ بْنِ عَبْدِ الْجَبَّارِ عَنْ صَفْوَانَ عَنِ الْعَلاَءِ عَنْ مُحَمَّدِ بْنِ مُسْلِمٍ عَنْ أَحَدِهِمَا (عَلَيْهِما الْسَّلام) قَالَ سَأَلْتُهُ عَنِ الرَّجُلِ تَفْجَأُهُ الْجِنَازَةُ وَهُوَ عَلَى غَيْرِ طُهْرٍ قَالَ فَلْيُكَبِّرْ مَعَهُمْ.
4. Abu Ali al-Ash’ariy has narrated from Muhammad ibn ‘Abd al-Jabbar from Safwan from al-‘Ala’ from Muhammad ibn Muslim who has said the following: “I once asked one of the two Imam, (abu Ja’far or abu ‘Abd Allah), ‘Alayhim al-Salam, about a man who suddenly comes across Salah (prayer) for a deceased without Wudu’. He (the Imam) said, ‘He can say Takbir (Allah is great beyond description) along with them.’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).