Yahya related to me from Malik from Nafi that Abdullah ibn Umar used to do kaffara for a broken oath by feeding ten poor people. Each person got a mudd of wheat. He sometimes freed a slave if he had repeated the oath.
Muwatta Malik Book 22, Hadith 14
← Previous Hadith Yahya related to me from Malik from Nafi that Abdullah ibn Umar said, "If someone breaks an oath which he has stressed, he has to free a slave, or clothe ten poor people. If someone breaks an oath, but has not stressed it, he only has to feed ten poor people and each poor person is fed a mudd of wheat. Some one who does not have the means for that, should fast for three days."

Muwatta Malik Book 22, Hadith 13 Next Hadith → Yahya related to me from Malik from Yahya ibn Said that Sulayman ibn Yasar said, "I understood from people that when they made the kaffara for a broken oath, they gave a mudd of wheat according to the smaller mudd. They thought that that would compensate for them."

Malik said, "The best of what I have heard about the one who does kaffara for breaking his oath by clothing people is that if he clothes men he clothes them each in one garment. If he clothes women, he clothes them each in two garments, a long shift and a long scarf, because that is what is satisfactory for each of them in the prayer."

Muwatta Malik Book 22, Hadith 15