Narrated Anas bin Malik:
"When the funeral of Sa'd bin Mu'adh was carried, the hypocrites said: 'How light his funeral is.' And this was due to his judgment concerning Banu Quraizah. So this reached the Prophet (ﷺ), and he said: 'Indeed, the angels were carrying him.'" (JA)
English reference (JA): Vol. 1, Book 46, Hadith 3849 (JA)
Arabic reference (JA): Book 49, Hadith 4220 (JA)