The Prophet (ﷺ) said, "It is not lawful for a woman (at the time of wedding) to ask for the divorce of her sister (i.e. the other wife of her would-be husband) in order to have everything for herself, for she will take only what has been written for her."
Sahih al-Bukhari Book 67, Hadith 87
← Previous Hadith 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).

Sahih al-Bukhari Book 67, Hadith 86 Next Hadith → `Abdur-Rahman bin `Auf came to Allah's Messenger (ﷺ) and he had marks of Sufra (yellow perfume). Allah's Messenger (ﷺ) asked him (about those marks). `AbdurRahman bin `Auf told him that he had married a woman from the Ansar. The Prophet (ﷺ) asked, "How much Mahr did you pay her?" He said, "I paid gold equal to the weight of a date stone." Allah's Messenger (ﷺ) said to him, "Give a wedding banquet, even if with one sheep."

Sahih al-Bukhari Book 67, Hadith 88