अहीयमान: स्वद्धर्मात् स ह्यस्याखिलकामधुक् ॥ ३१ ॥
brāhmaṇo yena kenacit
ahīyamānaḥ svad dharmāt
sa hy asyākhila-kāma-dhuk
santuṣṭaḥ — satisfied; yarhi — when; varteta — carries on; brāhmaṇaḥ — a brāhmaṇa; yena kenacit — with whatever; ahīyamānaḥ — not falling short; svāt — of his own; dharmāt — religious duty; saḥ — those religious principles; hi — indeed; asya — for him; akhila — of everything; kāma-dhuk — the mystic cow, milked for fulfillment of any desire.
When a brāhmaṇa is satisfied with whatever comes his way and does not fall away from his religious duties, those very religious principles become his desire cow, fulfilling all his wishes.