Uqba bin 'Alqama al-Ma'fari عقبة بن علقمة بن حديج المعافري · Wedlock, Marriage (Nikaah)

I married a woman and then a black lady came to us and said, "I have suckled you both (you and your wife)." So I came to the Prophet (ﷺ) and said, "I married so-and-so and then a black lady came to us and said to me, 'I have suckled both of you.' But I think she is a liar." The Prophet (ﷺ) turned his face away from me and I moved to face his face, and said, "She is…

The Prophet (ﷺ) said: "The stipulations most entitled to be abided by are those with which you are given the right to enjoy the (women's) private parts (i.e. the stipulations of the marriage contract).