ऋतं पिबन्तौ सुकृतस्य लोके
गुहां प्रविष्टौ परमे परार्धे ।
छायातपौ ब्रह्मविदो वदन्ति
पञ्चाग्नयो ये च त्रिणाचिकेताः
ṛtaṃ pibantau sukṛtasya loke guhāṃ praviṣṭau parame parārdhe / chāyātapau brahmavido vadanti pañcāgnayo ye ca triṇāciketāḥ
There are two who enjoy the fruits of their good deeds in the world, having entered into the cave of the heart, seated (there) on the highest summit. The knowers of Brahman call them shadow and light. So also (they are called) by householders who perform five fire- sacrifices or three Nachiketa fire-sacrifices.
Translated by Swami Paramananda
"There are the two, drinking their reward in the world of their own works, entered into the cave (of the heart), dwelling on the highest summit (the ether in the heart). Those who know Brahman call them shade and light; likewise, those householders who perform the Trinâkiketa sacrifice.
There are two who enjoy the fruits of their good deeds in the world, having entered into the cave of the heart, seated (there) on the highest summit. The knowers of Brahman call them shadow and light. So also (they are called) by householders who perform five fire- sacrifices or three Nachiketa fire-sacrifices.