It is narrated from Jabir bin Abdullah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said four takbirs over the deceased and recited Surah Al-Fatihah after the first takbir.
Hadith Referenceمسند الإمام الشافعي / كتاب الجنائز / 584
Hadith Takhrijصحيح من غير هذا الطريق اخرجه الطحاوى في شرح المعاني : (1/ 494)۔