Vāsanā is divided into two, the pure and the impure. If thou art led by the pure vāsanās, thou shalt thereby soon reach by degrees My Seat. But should the old, impure vāsanās land thee in danger, they should be overcome through various efforts.§
Śukla Yajur Veda, Mukti Upanishad, 2. UPA P. 7§