Chapter on the Rules of Menstruation, Istihadah, and Nifas, and Purification From Them

This narration also indicates that the Prophet صلى الله عليه وعلى آله وسلم instructed her to perform ghusl on the eighteenth day. It does not imply that if she had informed him of a shorter duration, he would have given her the same instructions. Then, the Shaykh (Al-Mufid), may Allah سبحانه وتعالى support him, added: "Similarly, if a menstruating woman sees blood on the eleventh day after the start of her menstruation, she should perform ghusl after ensuring her purity (istibra), perform wudu, and then pray and fast. This blood is considered istihadha (irregular bleeding) and not menstruation, as we have explained earlier." The explanation provided earlier clarifies this matter sufficiently, and that should be adequate, Allah سبحانه وتعالى willing.