Al-Suddi narrates: I asked Sayyiduna Anas bin Malik (may Allah be pleased with him): Did the Prophet (peace and blessings be upon him) lead the funeral prayer of his son, Sayyiduna Ibrahim (may Allah be pleased with him)? He replied: I do not know. May Allah Almighty send down His mercy upon Sayyiduna Ibrahim (may Allah be pleased with him); had he lived, he would have been a truthful prophet.
Ahmad recorded it, and its narrators are the narrators of the Sahih.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 14953