Rahogatavagga

Suttapiṭaka · Saṁyuttanikāya · Mahāvaggasaṁyutta · Vol. 19 · Section 1264

[1264] Then the Venerable Mahāmoggallāna, having known with his own mind the reflection in the mind of the Venerable Anuruddha, appeared in the presence of the Venerable Anuruddha — just as a strong man might extend his bent arm or bend his extended arm.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 1 other place

Vol. 19 · Section 1254 — Anuruddhasaṅyuta