HADITH OF THE DAY
NOT LAWFUL (AT THE TIME OF WEDDING)
Narrated by Abu Huraira
The Prophet (Peace & Blessings of Allah upon Him) 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."
[Vol-7 Hadith-82 Sahih Al-Bukhari]
https://sites.google.com/site/activeislamicinfo/sahih-hadith