It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "When the time for each prayer begins, a caller is sent who announces: O sons of Adam! Rise and extinguish the fire which you have kindled for yourselves. (When they heed this announcement and) stand up and perform ablution, their sins fall from their eyes, and when they perform the prayer, the sins committed between this prayer and the previous one are forgiven. Then you (by committing sins) kindle the fire again, and as soon as the time for Zuhr prayer comes, the caller announces again: O sons of Adam! Rise and extinguish the fire which you have kindled for yourselves. They rise again, perform ablution, and pray, and thus the sins committed between this prayer and the previous one are forgiven. When the time for Asr prayer comes, the same happens; when the time for Maghrib comes, the same occurs; and when the time for Isha comes, it happens likewise. Thus, when people sleep, they are forgiven." Then the Prophet (peace and blessings of Allah be upon him) said: "Some people spend the day adorned with goodness, and some are immersed in evil."