حَدَّثَنَا أَحْمَدُ بْنُ يُونُسَ، حَدَّثَنَا زُهَيْرٌ، حَدَّثَنَا سُهَيْلُ بْنُ أَبِي صَالِحٍ، عَنِ ابْنِ أَبِي سَعِيدٍ الْخُدْرِيِّ، عَنْ أَبِيهِ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ إِذَا تَبِعْتُمُ الْجَنَازَةَ فَلاَ تَجْلِسُوا حَتَّى تُوضَعَ ‏"‏ ‏.‏ قَالَ أَبُو دَاوُدَ رَوَى هَذَا الْحَدِيثَ الثَّوْرِيُّ عَنْ سُهَيْلٍ عَنْ أَبِيهِ عَنْ أَبِي هُرَيْرَةَ قَالَ فِيهِ حَتَّى تُوضَعَ بِالأَرْضِ وَرَوَاهُ أَبُو مُعَاوِيَةَ عَنْ سُهَيْلٍ قَالَ حَتَّى تُوضَعَ فِي اللَّحْدِ ‏.‏ قَالَ أَبُو دَاوُدَ وَسُفْيَانُ أَحْفَظُ مِنْ أَبِي مُعَاوِيَةَ ‏.‏

Narrated Abu Sa’id Al Khudri : The Messenger of Allah (PBUH) as saying: When you follow a funeral, do not sit until the bier is placed (on the ground). Abu Dawud said: This tradition has been narrated by al-Thawri (i.e. Sufyan) from Suhail, from his father on the authority of Abu Hurairah. This version has: until it (the bier) is placed on the ground. It has also been narrated by Abu Mu'wiyah from Suhail. This has: Until it is placed in the grave. Abu Dawud said: Sufyan's version is more guarded than that of Abu Mu'awiyah. Translation Not Available

Book Ref: Sunan Abi Dawud Book 21 Hadith 3173
Web Ref:  Sunan Abi Dawud Book 20 Hadith 3167