Hadith
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا اللَّيْثُ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ ـ رضى الله عنهما ـ عَنْ عَامِرِ بْنِ رَبِيعَةَ ـ رضى الله عنه ـ عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " إِذَا رَأَى أَحَدُكُمْ جَنَازَةً فَإِنْ لَمْ يَكُنْ مَاشِيًا مَعَهَا فَلْيَقُمْ حَتَّى يُخَلِّفَهَا، أَوْ تُخَلِّفَهُ أَوْ تُوضَعَ مِنْ قَبْلِ أَنْ تُخَلِّفَهُ ".
Narrated 'Amir bin Rabi`a:The Prophet (ﷺ) said, "If any one of you sees a funeral procession and he is not going along with it, then he should stand and remain standing till he gets behind it, or it leaves him behind, or the coffin is put down before it goes ahead of him
Sahih
Sahih al-Bukhari 1308 ·Book 23, Hadith 66·Also available on sunnah.com·