وَعَنْ عَبْدِ اَلرَّحْمَنِ بْنِ أَبِي لَيْلَى
قَالَ: «كَانَ زَيْدُ بْنُ أَرْقَمَ يُكَبِّرُ عَلَى جَنَائِزِنَا أَرْبَعًا، وَإِنَّهُ كَبَّرَ عَلَى جَنَازَةٍ خَمْسًا، فَسَأَلْتُهُ فَقَالَ: كَانَ رَسُولُ اَللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يُكَبِّرُهَا»
Abdur Rahman ibn Abi Laila (RAA) and ‘Zayd ibn Arqam (RAA) used to recite four Takbirat when praying over the dead, but once he said it five times, so I asked him about it. He said to me, ‘The Messenger of Allah (sallallahu alayhi wa sallam) used to do so.’ Related by Muslim and the four Imams.’
Bulugh al-Maram 669, Book 3, Funerals, Hadith 29. 1 min read