Sayyiduna Abu Razin (may Allah be pleased with him), whose name is Laqit bin Amir, said: We used to slaughter animals in Rajab, then eat from them and feed others. The Messenger of Allah (peace and blessings be upon him) said: "There is no harm in that." And Waki' (the narrator) said: I will never abandon it.
Hadith Referenceالمعجم الكبير للطبراني / باب اللام / 16516