CHĀNDOGYA UPANISHAD · 4.1.5

तद् उ ह जानश्रुतिः पौत्रायण उपशुश्राव ।
स ह संजिहान एव क्षत्तारम् उवाचाङ्गारे ह सयुग्वानम् इव रैक्वम् आत्थेति ।
यो नु कथं सयुग्वा रैक्व इति ॥

tad u ha jānaśrutiḥ pautrāyaṇa upaśuśrāva ।
sa ha saṃjihāna eva kṣattāram uvācāṅgāre ha sayugvānam iva raikvam āttheti ।
yo nu kathaṃ sayugvā raikva iti ॥

Gânasruti Pautrâyana overheard this conversation, and as soon as he had risen in the morning, he said to his. door-keeper (kshattri): 'Friend, dost thou speak of (me, as if I were) Raikva with the car?' He replied: 'How is it with this Raikva, with the car?'

F. Max Müller · The Upanishads, Sacred Books of the East 1 (1879)