Vaikhanasasmartasutra 1.2.4

1.2.4

brāhmaṇasya pālāśo bailvo vā keśānto nirvraṇo 'numṛṣṭo 'nudvejano yūpavadavakro daṇḍaḥ kṛṣṇamṛgasyājinaṃ mauñjī mekhalā kṣatriyasya naiyagrodho lalāṭānto daṇḍo rauravamajinaṃ maurvī mekhalā vaiśyasyaudumbaro nāsikānto daṇḍo bāstavamajinaṃ śāṇī mekhalā oṃ bhūrbhuvaḥ suvastatsavituriti sāvitrī oṃ bhūrbhuvaḥ suvastatsaviturāpo jyotī rasa iti prāṇāyāma oṃ bhūrbhuvaḥ suvaḥ svāheti vyāhṛtiḥ agnaye samidhamiti dve agnaye samidhāviti catvāryagnaye samidha iti samidādhānametāni brāhmaṇasya oṃ bhūrbhuvastatsavituriti sāvitrī oṃ bhūrbhuvastatsavitustejo jyotī rasa iti prāṇāyāma oṃ bhūrbhuvaḥ svāheti vyāhṛtiḥ agnaye samidhamiti dve agnaye samidhāviti samidādhānametāni kṣatriyasya oṃ bhūstatsavituriti sāvitrī oṃ bhūstatsavituragnirjyotī rasa iti prāṇāyāma oṃ bhūḥ svāheti vyāhṛtiḥ agnaye samidhamiti samidādhānametāni vaiśyasya bhavanti \4\