Hadith 1719
وَعَنْ أَبِي رَافِعٍ قَالَ: سَلَّ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ سَعْدًا وَرَشَّ عَلَى قَبره مَاء. رَوَاهُ ابْن مَاجَه
Abu Rafi‘ said that God's messenger lowered Sa‘d and sprinkled water over his grave. Ibn Majah transmitted it.