Brahmana is a highest in varnasrama not because he may be born in a brahmana family, but because:
vaiśeṣyāt prakṛtiśraiṣṭhyānniyamasya ca dhāraṇāt |
saṃskārasya viśeṣācca varṇānāṃ brāhmaṇaḥ prabhuḥ || Manu samhita 10.3 ||
The Brāhmaṇa is the lord of the varnas, on account of his distinctive qualities, of the superiority of his origin, of his observance of restrictive rules, of the peculiar character of his sanctification.
1. Distinctive qualities – Vaiśeṣyāt’.—‘Through pre-eminence,—of qualities
2. Origin – of the superiority of his origin,’—the Brāhmaṇa having sprung from the highest part of Prajāpati’s body. ‘Origin’ means source.
3. Observances of restrictive rules – Niyamasya dhāraṇāt
4. The peculiarity of his sanctification;’—this refers to the observances of the Accomplished Student. (Guru can be someone who by himself is a foremost disciple).