Section
If the bleeding lasts more than fifteen days, she is deemed to be experiencing irregular bleeding (istihada). In that case she designates six or seven days of every lunar month as her menstruation, choosing whichever of the two she considers more likely when there is no distinguishing sign. After that she performs a full ritual bath, then fasts and prays, having first washed the affected area, bandaged it, and performed ablution at the time of each prayer, intending by that ablution to gain lawful access to worship.
Anyone who suffers from a continuous state of ritual impurity follows the same procedure.
It is unlawful to have intercourse with a woman in istihada, yet no expiation is required.
Post-partum bleeding (nifas) has no minimum duration; its maximum is forty days, and its rulings apply once she delivers something in which the human form can be recognized.1
If a period of cleanness occurs within those forty days, it is treated as purity, although intercourse during it is discouraged.
When a woman gives birth to two or more children, the nifas period is calculated from the first delivery; therefore, if forty days separate the births, there is no nifas for the second child.
The ruling concerning intercourse with a woman in nifas is the same as that for intercourse with a menstruating woman.2
A man may lawfully take medication that suppresses sexual intercourse, and a woman may take medicine either to induce menstruation or to halt it.