Is delaying Fajr prayer due to sleep forbidden? Is delaying Dhuhr prayer due to studying at school permissible if there is no possibility of praying there? Are there conditions for fasting, and how is prayer performed during fasting, and is it permissible to put water in one's mouth while fasting?

Delaying the Fajr prayer due to sleep is not sinful if efforts were made to wake up and there was an intention to pray it on time. However, delaying it without making an effort or a firm intention is sinful. Studying is not a legitimate excuse for delaying prayer beyond its prescribed time, and the student must perform the prayer at school in a clean place. As for the conditions of fasting, they include refraining from things that break the fast from dawn until sunset, while being keen to avoid sins and performing prayers on time. The manner of performing prayer during fasting is the same as on other days, and there is no harm in rinsing the mouth provided there is no exaggeration, to avoid water reaching the throat.