What should you do about the Dhuhr and Asr prayers that you missed due to sleep, followed immediately upon waking by the onset of menstruation? Do you have to make them up, and how and when? Are you sinful for missing the Dhuhr prayer while you were asleep?

Scholars differed concerning the obligation to make up prayers for a woman who menstruated after the prayer's time had begun. Sheikh al-Islam Ibn Taymiyyah, Malik, and Abu Hanifa chose the opinion that making up the prayers is not obligatory, while Shafi'i and Ahmad consider it obligatory.

In your situation, if menstruation began after you woke up, after the time of the Asr prayer, scholars differed regarding the obligation to make up both Dhuhr and Asr prayers. The more cautious approach is to make them up. According to the Maliki school, you are not obligated to make up Dhuhr and Asr if menstruation began before sunset, with enough time remaining for five or more rak'ahs. However, if only enough time for four rak'ahs remained before sunset, then Asr is dropped, and you are only required to make up Dhuhr. If only enough time for three rak'ahs or less remained, then Asr is dropped, and you make up Dhuhr.

You are not sinful for sleeping through the Dhuhr prayer if your sleep began before its time.