Should anyone amongst you see a bier he must stand up so long as it is within sight in case he does not intend to follow it.
Sahih Muslim Book 11, Hadith 97
← Previous Hadith Should any one of you come across a funeral procession, and if he does not intend to accompany it, he must stand up until it passes by him or is placed upon the ground before it passes him.

Sahih Muslim Book 11, Hadith 96 Next Hadith → When you follow a bier, do not sit until it is placed on the (ground).

Sahih Muslim Book 11, Hadith 98