Garudapurana 3.24.85

3.24.85

pīṭhasyordhvaṃ nairṛtasyordhvakoṇe jñānādhipaṃ praṇamedvāyudevam /
pīṭhasyordhvaṃ vāyukoṇe ca subhrūrvairāgyānāmadhipaṃ caiva rudram //

Above the pedestal, in the upper southwest corner, one should bow to the god Vāyu, the lord of knowledge; / above the pedestal, in the northwest corner, O fair-browed one, [to] Rudra, the lord of dispassion;