It wasnarrated from Ibn 'Abbas that a man came to the Prophet (ﷺ)andsaid:
"I have to offer a sacrifice and I can afford it, but Icannot find (a camel) to buy." The Prophet (ﷺ) told him to buysevensheep and slaughter them. (ID)
English reference (ID): Vol. 4, Book 26, Hadith 3136 (ID)
Arabic reference (ID): Book 26, Hadith 3256 (ID)