Nafi' b. Jubair saw me and we were standing for a bier, while he was sitting and waiting for the bier to be placed on the ground. He said to me: What makes you keep standing? I said: I am waiting that the bier may be placed on the ground (and I am doing that) on the hadith narrated to me by Abu Sa'id al-Khudri. Upon this Nafi' said: Verily, Mas'ud b. Hakam reported to me on the authority of Hadrat 'Ali b. Abu Talib that the Prophet ﷺ stood up first (for a bier) and then sat down.  

أَنْ تُوضَعَ الْجَنَازَةُ لِمَا يُحَدِّثُ أَبُو سَعِيدٍ الْخُدْرِيُّ فَقَالَ نَافِعٌ فَإِنَّ مَسْعُودَ بْنَ الْحَكَمِ حَدَّثَنِي عَنْ عَلِيِّ بْنِ أَبِي طَالِبٍ أَنَّهُ قَالَ قَامَ رَسُولُ اللَّهِ ﷺ ثُمَّ قَعَدَ  

Verily, the Prophet ﷺ used to stand first but later on kept sitting; but it is also narrated that Nafi' ibn Jubair saw Waqid b. 'Amr standing for a bier till it was placed down.  

شَأْنِ الْجَنَائِزِ إِنَّ رَسُولَ اللَّهِ ﷺ قَامَ ثُمَّ قَعَدَ وَإِنَّمَا حَدَّثَ بِذَلِكَ لأَنَّ نَافِعَ بْنَ جُبَيْرٍ رَأَى وَاقِدَ بْنَ عَمْرٍو قَامَ حَتَّى وُضِعَتِ الْجَنَازَةُ  

This hadith has been narrated by Yahya b. Sa'id with the same chain of transmitters.  

عَنْ يَحْيَى بْنِ سَعِيدٍ بِهَذَا الإِسْنَادِ  

I heard from Mas'ud b. al-Hakam who narrated it on the authority of Hadrat 'Ali that he said: We saw the Prophet ﷺ stood up for a (bier) and we also stood up; he sat down and we too sat down.  

رَأَيْنَا رَسُولَ اللَّهِ ﷺ قَامَ فَقُمْنَا وَقَعَدَ فَقَعَدْنَا يَعْنِي فِي الْجَنَازَةِ  

This hadith has been narrated by Shu'ba with the same chain of transmitters.  

عَنْ شُعْبَةَ بِهَذَا الإِسْنَادِ