Muhammad bin Bashar Bindar محمد بن بشار بندار · The Book on Sacrifices

"We were standing with the Prophet (ﷺ) at 'Arafat when I heard him say: 'O you people! For every household each year is Udhiyah (sacrifice) and 'Atirah. Do you know what an 'Atirah is ? It is that which you call Ar-Rajabiyyah.'"