The Discourse about Sāriputta

Thus I heard: At one time the Gracious One was dwelling near Sāvatthī, in Jeta’s Wood, at Anāthapiṇḍika’s monastery. Then at that time venerable Sāriputta was sitting not far away from the Gracious One, after folding his legs crosswise, and setting his body straight, and was attending to mindfulness at the front.
The Gracious One saw that venerable Sāriputta was sitting not far away, after folding his legs crosswise, and setting his body straight, and was attending to mindfulness at the front. Then the Gracious One, having understood the significance of it, on that occasion uttered this exalted utterance:

“Just like a mountain rock, unagitated, well established,
So is the monk, through the destruction of delusion—
like a mountain he does not shake.”