Abu Sa’id (RAA) narrated that the Messenger of Allah (ﷺ) said:

"Stand up when you see a funeral procession, and he who accompanies it should not sit down until the coffin is placed on the ground." Agreed upon.

وَعَنْ أَبِي سَعِيدٍ ‏- رضى الله عنه ‏- أَنَّ رَسُولَ اَللَّهِ ‏- صلى الله عليه وسلم ‏-قَالَ: { إِذَا رَأَيْتُمُ الْجَنَازَةَ فَقُومُوا, فَمَنْ تَبِعَهَا فَلَا يَجْلِسْ حَتَّى تُوضَعَ } مُتَّفَقٌ عَلَيْه ِ [1]‏ .‏