Brahmasutta

Suttapiṭaka · Saṁyuttanikāya · Mahāvaggasaṁyutta · Vol. 19 · Section 755

[755] Then Brahmā Sahampati, having discerned with his own mind the reflection in the Blessed One's mind, just as a strong man might extend his bent arm or bend his extended arm, even so vanished from the brahmā world and appeared before the Blessed One. Then Brahmā Sahampati, having arranged his upper robe over one shoulder, raised his joined palms in reverence toward the Blessed One and said this to the Blessed One:

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 2 other places