ĀpŚS, 1, 12, 3.0 bhṛgūṇām aṅgirasāṃ tapasā tapyasveti pradakṣiṇam aṅgāraiḥ paryūhya vasūnāṃ pavitram asīti tasyāṃ prāgagraṃ śākhāpavitram atyādadhāti //

ĀpŚS, 1, 23, 6.0 bhṛgūṇām aṅgirasāṃ tapasā tapyadhvam iti vedena kapāleṣv aṅgārān adhyūhya madantīr adhiśrayati //