Simplify the following text for a Grade 10 native English-speaking person.
Original: During the last ten days of Ramadan , larger mosques will host all-night programs to observe Laylat al-Qadr , the night Muslims believe that Muhammad first received Qur ` anic revelations .
Simplified: During the last ten days of Ramadan , larger mosques will host all-night programs to observe Laylat al-Qadr . It is the night Muslims believe that the Islamic prophet Muhammad first received Qur ` anic revelations .