Mantra 1

अथ हैनं यजमान उवाच भगवन्तं वा अहं विविदिषाणीत्युषस्तिरस्मि चाक्रायण इति होवाच ॥ १.११.१ ॥

In plain words

Then the sacrificer said to him, "I should like to know who thou art, sir." "I am Uṣasti Cākrāyaṇa," said he.