Hazrat Abdullah says that there are four takbirs in the funeral prayer, including the takbir of commencement.

Hazrat Muhajir Abi Al-Hasan narrates that I offered the funeral prayer behind Hazrat Bara, and he said four takbirs in it.

A person asked Hazrat Uqbah bin Aamir, "How many takbeers are there in the funeral prayer?" He replied, "Four." I asked, "Is it the same during the day and night?" He replied, "The day and night are the same."

Hazrat Zaid bin Talha narrates that I went to Hazrat Ibn Abbas (may Allah be pleased with them), and he recited four Takbirs over the funeral.

Hazrat Thabit Ubaid narrates that Hazrat Zaid bin Thabit used to recite four Takbirs in the funeral prayer, and Hazrat Abu Hurairah also used to recite four Takbirs.

Hazrat Abu Al-Anbas narrates from his father that he offered the funeral prayer behind Hazrat Abu Hurairah (may Allah be pleased with him), and he (Abu Hurairah) said four Takbirs over it.

It is narrated from the servant of Hasan bin Ali (may Allah be pleased with him) that Hasan bin Ali (may Allah be pleased with him) led the funeral prayer of Ali (may Allah be pleased with him) and recited four takbirs in it.

Hazrat Nafi' narrates that Hazrat Abdullah bin Umar (may Allah be pleased with them) would not say more than four takbirs in the funeral prayer.

A narration similar to this is also reported from Hazrat Zaid bin Thabit.

Hazrat Abdullah bin Ma’qil narrates that Hazrat Ali (may Allah honor his face) during his caliphate recited four takbirs in every funeral prayer, except for Hazrat Sahl bin Hunaif, upon whom he recited six takbirs. Then, turning towards the people, he said: (I recited six takbirs) because he was a participant of Badr.