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
mention was made of standing at the funeral until the body is placed in the grave. 'Ali bin Abi Talib said: "The Messenger of Allah stood, then he sat down."
رَأَيْتُ رَسُولَ اللَّهِ ﷺ قَامَ فَقُمْنَا وَرَأَيْنَاهُ قَعَدَ فَقَعَدْنَا
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).
قَدْ رَأَيْنَا رَسُولَ اللهِ ﷺ قَامَ فَقُمْنَا وَقَعَدَ فَقَعَدْنَا
I saw the Messenger of Allah ﷺ stand for a funeral, so we stood, and I saw him retrain seated, so we remained seated.
رَأَيْتُ رَسُولَ اللهِ ﷺ قَامَ فِي جَنَازَةٍ فَقُمْنَا وَرَأَيْتُهُ قَعَدَ فَقَعَدْنَا
mention was made of standing at the funeral until the body is placed in the grave. 'Ali bin Abi Talib said: "The Messenger of Allah stood, then he sat down." (Using translation from Nasāʾī 2000)
«رَأَيْتُ رَسُولَ اللهِ ﷺ قَامَ فَقُمْنَا وَرَأَيْنَاهُ قَعَدَ فَقَعَدْنَا»
" عَنْ عَلىٍّ قَالَ: رَأيْنَا رَسُولَ الله ﷺ قَامَ في الجنَازَةِ فَقُمْنَا، ثُمَّ رَأَيْنَاهُ فَقَعَدْنَا ".