Sayyiduna Ali bin Abi Talib (may Allah be pleased with him) narrates: On the day of Badr, Hamzah, Ubaydah bin al-Harith and I were helped against al-Walid bin Utbah. The narrator said: I think he also said: and this was not hidden from the Prophet (peace and blessings be upon him).
Hadith Referenceالمعجم الكبير للطبراني / باب الحاء / 2942