Ibn 'Umar (RA) said, "The Messenger of Allah (ﷺ) used to say this dua when he put the dead body in the grave:
بِسْمِ اللَّهِ وَعَلَى سُنَّةِ رَسُوْلِ اللَّهِ (ﷺ)
Pronunciation
Bismillaahi wa 'alaa sunnati Rasulillaah
Meaning
With the Name of Allah and according to the Sunnah of the Messenger of Allah (ﷺ).
Source: Sahih. Abu Dawud: 3213
Read the hadith
حَدَّثَنَا مُحَمَّدُ بْنُ كَثِيرٍ، ح وَحَدَّثَنَا مُسْلِمُ بْنُ إِبْرَاهِيمَ، حَدَّثَنَا هَمَّامٌ، عَنْ قَتَادَةَ، عَنْ أَبِي الصِّدِّيقِ، عَنِ ابْنِ عُمَرَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم كَانَ إِذَا وَضَعَ الْمَيِّتَ فِي الْقَبْرِ قَالَ " بِسْمِ اللَّهِ وَعَلَى سُنَّةِ رَسُولِ اللَّهِ صلى الله عليه وسلم " . هَذَا لَفْظُ مُسْلِمٍ .
Narrated Abdullah ibn Umar: When the Prophet (ﷺ) placed the dead in the grave, he said: In the name of Allah, and following the Sunnah of the Messenger of Allah (ﷺ). This is Muslim's version. [Sahih (Albani). Abu Dawud: 3213]
Duas from IslamicAPI's Masnun Dua dataset (based on the Quran, hadith, Hisnul Muslim and Rahe Belayat). See the dataset