It is narrated from Muhammad ibn Ahmad ibn Yahya, from Abu Ja’far, from his father, from Hafs ibn Ghiyath, from Imam Ja’far Al Sadiq عليه السلام, from his father Imam Al Baqir عليه السلام, from Imam Ali عليه السلام, who said: Imam عليه السلام said: "The woman in a state of nifas (postnatal bleeding) refrains from prayer for forty days. If she becomes pure within this time, she resumes her prayers. If not, she performs ghusl, begins praying, and her husband may approach her. She is considered in the same state as a mustahadah (a woman experiencing irregular bleeding); she fasts and prays."