Musannaf Ibn Abi Shaybah 11787 — Reports on the takbirs of the funeral

Abu Wa'il said: Sayyiduna Umar (may Allah be pleased with him) gathered the noble Companions and consulted them (asked their opinion) about the takbirs of the funeral prayer. Some of them said the Prophet (peace and blessings be upon him) used to say five takbirs, some said he used to say seven takbirs, and some said he used to say four takbirs. The narrator said: Then he gathered them all upon four takbirs, like the longest prayer.