Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates from the Messenger of Allah (peace and blessings be upon him) that he (peace and blessings be upon him) said: "Beware of suspicion, for suspicion is false speech. Do not pry, do not spy, do not hate one another, and do not cut off ties with one another. O servants of Allah, be brothers. None of you should propose over the marriage proposal of his brother, until he either marries or withdraws. A woman and her paternal aunt are not to be combined (in marriage), nor a woman and her maternal aunt. A woman should not fast while her husband is present except with his permission, nor permit (anyone to enter) his house while he is present except with his permission. If she gives in charity from her husband's earnings, she has half the reward. And no woman should ask for the divorce of her sister in order to marry and take her share of provision; rather, she will receive only what is decreed for her."
(b) Yahya bin Bukayr narrated it up to the words "until he marries or withdraws."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 14035