مسائل المنتخبه (Articles Of Islamic Acts) - الخوئي، السيد أبوالقاسم - الصفحة ٥٢٩ - IDDAH (WAITING PERIOD) OF A WIDOW

and the period of her marriage comes to an end or her husband excuses her the remaining period of marriage she should observe Iddah. Hence if she hasmenstrual discharge she should observe Iddah for two periods of menses and should not many a man during that period, and if she does not have menstrual discharge she shouldrefrain from marrying a man for forty five days. And in case she is pregnant the obligatory precaution is that she should observe iddah till the birth of the child or forforty five days, whichever period is longer.
٢٥٢٥. The time of the iddah of divorce commences when the pronouncing of the formula of divorce completes, whether the woman knows it or not that she has beendivorced. Hence, if she comes to know after the end of the iddah that she has been divorced. it is not necessary for her to observe iddah again.

IDDAH (WAITING PERIOD) OF A WIDOW
٢٥٢٦. If a woman is not pregnant and her husband dies she should observe iddah (the waiting period) for four months and ten days (i.e. she should not marry duringthat period), even though she may be menopause, or her husband may have contracted fixed time marriage with her, or he may not have had sexual intercourse with her. In case,however, she is pregnant she should observe the waiting period till the birth of the child. But if the child is born before the expiry of four months and ten days from thedeath of her husband she should wait till the expiry of that period. This period is called the waiting period of death (Iddatul wafat).
٢٥٢٧. It is unlawful for a woman who is observing the waiting period of death to wear brightly colored dress or to use collyrium and similarly any such thing as isconsidered to be an adornment is unlawful for her.
٢٥٢٨. If a woman becomes certain that her husband has died and marries another man after the completion of iddah of