Sunan an-Nasa'i, Book 21, Hadith 179 (In-Book) ⓘ
It was narrated that Abu Hurairah Said: "The Messenger of Allah said: 'Whoever attends a funeral until the prayer is offered will have one Qirat and whoever attends until (the body) is buried will have two Qirats."' It was said: "What are the two Qirats, O Messenger of Allah?" He said: "Like two great mountains."
أَخْبَرَنَا سُوَيْدٌ، قَالَ أَخْبَرَنَا عَبْدُ اللَّهِ، عَنْ يُونُسَ، عَنِ الزُّهْرِيِّ، قَالَ أَنْبَأَنَا عَبْدُ الرَّحْمَنِ الأَعْرَجُ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مَنْ شَهِدَ جَنَازَةً حَتَّى يُصَلَّى عَلَيْهَا فَلَهُ قِيرَاطٌ وَمَنْ شَهِدَ حَتَّى تُدْفَنَ فَلَهُ قِيرَاطَانِ " . قِيلَ وَمَا الْقِيرَاطَانِ يَا رَسُولَ اللَّهِ قَالَ " مِثْلُ الْجَبَلَيْنِ الْعَظِيمَيْنِ " .
also referenced under: Hadith 1995 (Reference) & Volume 3, Book 21, Hadith 1997 (DarusSalam)