Sunan an-Nasa'i #1916 · The Book of Funerals

Sunan an-Nasa'iIt was narrated form 'Amir bin Rabi'ah Al-'Adawi that the Messenger of Allah said
Sunan an-Nasa'i · Book 21 · The Book of Funerals
Sunan an-Nasa'i · كتاب 21 · كتاب الجنائز
"When you see a funeral, stand up until it has passed you, or (the body) is placed (in the grave)
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا اللَّيْثُ، عَنِ ابْنِ شِهَابٍ، عَنْ سَالِمٍ، عَنْ أَبِيهِ، عَنْ عَامِرِ بْنِ رَبِيعَةَ الْعَدَوِيِّ، عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم أَنَّهُ قَالَ ‏
"‏ إِذَا رَأَيْتُمُ الْجَنَازَةَ فَقُومُوا حَتَّى تُخَلِّفَكُمْ أَوْ تُوضَعَ ‏"‏ ‏.‏
Reference : Sunan an-Nasa'i 1916In-book reference : Book 21, Hadith 99