It is related by Abu Hurairah (May Allah be pleased with him)
that the Messenger of Allah (sallallaho alaihi wa sallam) said
"When the month of Ramadhan comes,
the Gates of Heaven are thrown open
and the Gates of Hell are shut,
and the devils are put behind bars"
In another report, the "Gates of Mercy"
are mentioned in place of the "Gates of Heaven".
[Bukhari and Muslim]
