Valmiki Ramayana 7.74.9

पुरा कृतयुगे राजन्ब्राह्मणा वै तपस्विनः ।अब्राह्मणस्तदा राजन्न तपस्वी कथञ्चन॥

purā kṛtayuge rājanbrāhmaṇā vai tapasvinaḥ |abrāhmaṇastadā rājanna tapasvī kathañcana ||

Our plain-language meaning of this verse is waiting for scholar review.