Follow the prescribed waiting period before remarrying after divorce .

According to the hadith, Umar ibn al-Khattab prescribed a waiting period for divorced women who have had one or two menstrual cycles before they can remarry. This is known as an 'idda' and it lasts three months after nine months of menstruation. This is to ensure that if the woman is pregnant, her child will be taken care of by its father and not left without support. The waiting period also allows time for the woman to reflect on her decision and make sure she wants to go through with it. It also gives her time to prepare herself emotionally and financially for marriage again if she chooses to do so.