17.17-19 Sraddhaya etc. upto tamasam udahrtam.  There is faith in all the three-fold austerity.  the faith of a man of the Sattva is full of austerity itself.  The faith of a man of the Rajas is in the Rajas i.e, showing  (or hyprocricy) etc.  But, the faith (or desire) of a man well established in the Tamas  is merely in ruining others.  Thus the sage speaks of all the three-fold austerity practised with faith.