The Mukhya Upaniṣads

Kauṣītaki · Adhyāya 4 · Kauṣītaki 4.1

Passage 6

स होवाच बालाकिर्य एवैष आकाशे पुरुषस्तमेवाहमुपास इति तं होवाचाजातशत्रुर्मा मैतस्मिन्समवादयिष्ठाः पूर्णमप्रवर्ति ब्रह्मेति वा अहमेतमुपास इति स यो हैतमेवमुपास्ते पूर्यते प्रजया पशुभिर्नो एव स्वयं नास्य प्रजा पुरा कालात्प्रवर्तते ॥ ६ ॥

In plain words

Bālāki said, "The person who is in space — him indeed I worship." Ajātaśatru said to him, "Do not draw me into talk about him. I worship him as the full, the unmoving Brahman." He who worships him thus is filled with offspring and cattle, and neither he himself nor his offspring departs from this world before its time.