Yevamot 41a and Yevamot 41b, when relatives of women with whom one might have had yibum are or are not permitted, and then the 3 month waiting period before a woman leaving one marriage may remarry.
Yevamot 41a and Yevamot 41b, when relatives of women with whom one might have had yibum are or are not permitted, and then the 3 month waiting period before a woman leaving one marriage may remarry.