- Description of fasting and age for beginning

According to Shariat, the definition of a fast is make the intention to fast for the sake of Allah from the break of dawn to sunset and to refrain from eating, drinking or having sexual intercourse.

For fasting, a woman has to be clean from menstruation or bleeding after childbirth meaning, the fast will not count for a woman on her period or still bleeding after childbirth. It is obligatory for a woman on her period or bleeding after childbirth to fast after her state of bleeding is over and she is clean from it, meaning to make Qaza for the missed Roza.

Fasting is not obligatory for children or for an insane person as long as they remain insane for the whole month of Ramadan, and if they gain sanity any period in the middle and it is still within the allocated time for intention, then they must make the intention and fast from that day onwards and the Qaza is necessary for the whole month, for example, if a person was insane from the first of Ramadan and gained sanity on the twenty ninth day from the break of dawn until midday then they will have to perform Qaza for whole month's fasts [Radd-ul-Mohtar].