"I said: 'O Messenger of Allah, how can I pay back the dues of the one who breast-fed me?' He said: 'By giving a male or female slave.'"
Sunan an-Nasa'i Book 26, Hadith 134
← Previous Hadith "My wife is breast-feeding and I do not want her to get pregnant." The Prophet said: "What has been decreed in the womb will come to be."

Sunan an-Nasa'i Book 26, Hadith 133 Next Hadith → I married a woman, then a black woman came to us and said: I breast-fed you both. I went to the Prophet and said: I married so and so and a black woman came to me and said: I breast-fed you both. He turned away from me so I came to him from the other side and said: She is lying. He said: "How can you be intimate with your wife when she says that she breast-fed you both? Leave her (divorce her)."

Sunan an-Nasa'i Book 26, Hadith 135