Final answer:
The person who summons Muslims to prayer five times per day is the mosque leader or muezzin.
Step-by-step explanation:
The person who summons Muslims to prayer five times per day is the mosque leader or muezzin. In the past, before clocks and time were established, the mosque leader would climb a minaret (a tall tower next to the mosque) and call the faithful to prayer at the required times of day. This person plays a crucial role in ensuring that Muslims are reminded and guided to perform their daily prayers.