You should pray four rak`as reciting in each one Fâtihat al-Kitâb and a sûra, and when you finish the recitation in the first rak`a you should say: fifteen times while standing, 'Glory be to God. Praise be to God. There is no god but God. God is most great.'
( subHâna-LLhâh, al-Hamdulli-LLhâh,
la-ilâha illa-LLhâh, Allâhu akbar ).
Then you should bow and say it ten times while bowing. Then you should raise your head after bowing and say it ten times. Then you should get down in prostration and say it ten times while prostrating yourself. Then you should raise your head after prostrating yourself and say it ten times. Then you should prostrate yourself and say it ten times then raise your head and say it ten times.
That is, seventy-five times in every rak`a. You should do that in four rak`as. If you can observe it once daily do so; if not, then, once weekly; if not, then once a month; if not, then once a year , if not, then once in your lifetime.