The Messenger of Allaah -sallAllaahu alayhi wa sallam-said:
There are two characteristics or two qualities that if a Muslim slave of Allaah is continuous upon, will enter Paradise, they are simple but those who do them are few. To say SubhanAllaah at the end of every prayer ten times, says alhamdulillah ten times and says Allaahu akbar ten times, which is equivalent to 150 times on the tongue and 1500 on the scales. And he says Allaahu Akbar 34 times when he goes to bed and he says alhamdulillah 33 times and says SubhanAllaah 33 times, and that is equivalent to 100 on the tongue and 1000 on the scales.
Collected by Abu Dawud(5065), At-Tirmithi(3410) Nisa’i(926) and Ahmed(2/205) Imam An-Nawwawee graded the isnad of this hadeeth as being Saheeh and Imam At-Tirmithi said this hadeeth is Hasan Saheeh.