Habitual obscurations (Skt. vāsanā varaṇa; Tib. བག་ཆགས་ཀྱི་སྒྲིབ་པ་, bakchak kyi dribpa, Wyl. bag chags kyi sgrib pa) — the habitual obscurations are explained according to the sutras as extremely subtle forms of cognitive obscuration, like the scent left behind in a container which once held musk. In the mantra tradition, they are the habitual tendencies of the transference of the three appearances, which are to be overcome by vajra-like primordial wisdom.