Hadith 631
حَدَّثَنَا يَحْيَى، عَنْ شُعْبَةَ، حَدَّثَنَا مُحَمَّدُ بْنُ الْمُنْكَدِرِ، عَنْ مَسْعُودِ بْنِ الْحَكَمِ، عَنْ عَلِيٍّ، رَضِيَ اللَّهُ عَنْهُ قَالَ قَدْ رَأَيْنَا رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَامَ فَقُمْنَا وَقَعَدَ فَقَعَدْنَا.
It was narrated that ‘Ali (رضي الله عنه) said:
We saw the Messenger of Allah (ﷺ) standing so we stood, then we saw him remain seated so we remained seated (i.e., when a funeral passed by).
Reference : Musnad Ahmad 631
In-book reference : Book 5, Hadith 68