Ud 3:4 Sāriputta (Sāriputta Sutta)
I have heard that on one occasion the Blessed One was staying near Sāvatthī at Jeta’s Grove, Anāthapiṇḍika’s monastery. And on that occasion Ven. Sāriputta was sitting not far from the Blessed One, his legs crossed, his body held erect, having set mindfulness to the fore. The Blessed One saw Ven. Sāriputta sitting not far away, his legs crossed, his body held erect, having set mindfulness to the fore.
Then, on realizing the significance of that, the Blessed One on that occasion exclaimed:
As a mountain of rock
is unwavering, well-settled,
so a monk whose delusion is ended
just like a mountain.1
1. This verse also appears among the verses attributed to Ven. Revata at Thag 14:1 (verse 651 in the PTS edition) and among the verses attributed to Ven. Sāriputta at Thag 17:2 (verse 1000 in the PTS edition).