I prayed behind Zayd bin Arqam at a funeral, and he made five takbirs. Then he turned around and said, "This is how the Messenger of Allah ﷺ made the takbirs," or, "your Prophet ﷺ made the takbirs."
حدثنا أسود بن عامر أخبرنا جعفر الأحمر
صليت خلف زيد بن أرقم على جنازة فكبر خمسا ثم التفت فقال هكذا كبر رسول الله ﷺ أو نبيكم ﷺ
Its chain of transmission is daif because of Abdul-Aziz bin Hakeem. The hadith has already appeared at , with a sahih chain.