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, the night Muslims believe the Islamic prophet Muhammad first received Qur'anic revelations.