Skandapurana 16.354.23

16.354.23

upākarmoṣṭharucakaḥ pravargyāvartabhūṣaṇaḥ ..
nānācchandogatipatho brahmoktakramavikramaḥ ..23 ..

having the upākarma rite for the ornament of his lips, adorned with the pravargya circle, / his gait the paths of various Vedic meters, his strides following the order taught by the Veda;