Is the blood that follows the forty days after childbirth considered menstruation that prohibits prayer and recitation, or is it irregular bleeding that does not prevent them, and is sexual intercourse permissible with irregular bleeding?

The majority of scholars hold that the maximum period of nifas (post-natal bleeding) is forty days. If the blood stops before this period, the woman should perform ghusl (ritual bath), pray, and fast. If the bleeding returns within the forty days, it is still considered nifas, and she is not permitted to fast or pray during it. If the bleeding continues after forty days, it is either menstruation if it coincides with her usual cycle or has the characteristics of menstrual blood, or it is istihada (non-menstrual bleeding). In the case of istihada, she is permitted to pray, fast, and engage in other acts of worship, and her husband is permitted to have intercourse with her. There is nothing wrong with this.