The Book of Funerals
21/45. Chapter:
The Command To Stand Up for A Funeral
Sunan an-Nasai
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 " .
It was narrated form 'Amir bin Rabi'ah Al-'Adawi that the Messenger of Allah said: "When you see a funeral, stand up until it has passed you, or (the body) is placed (in the grave)."
Reference : Sunan an-Nasa'i 1916In-book reference : Book 21, Hadith 99English translation : Vol. 3, Book 21, Hadith 1917