(it should be noted that the night of Tuesday is Monday night as we know it in the West).
The Prophet (Allah bless him and give him peace) is reported as having said:
If someone performs twelve [voluntary] cycles of ritual prayer [ithnatai 'asharata rak'a] on a Tuesday night-reciting in each cycle the Opening Sura of the Book [Fatihat al-Kitab] one time, and "Idha ja'a nasru 'llahi... [When the help of Allah comes...']" five times-Allah (Exalted is He) will build him a house in the Garden of Paradise, and each of the dimensions of that house will be ten times the size of this lower world.
