Hadith 6:649
Ghundar narrated to us, from Shu'bah, from 'Amr ibn Murrah, from 'Abd al-Rahman ibn Abi Layla, who said: Zayd used to perform the takbir over our funerals, and he performed five takbirs over a funeral. So I asked him, and he said: "The Messenger of Allah, may Allah bless him and grant him peace, used to perform them."
حدثنا غندر عن شعبة عن عمرو بن مرة عن عبد الرحمن بن أبي ليلى قال كان زيد يكبر على جنائزنا وأنه كبر على جنازة خمسا فسألته فقال كان رسول الله صلى الله عليه وسلم يكبرها