VI. 6. Unshaken as a Rock
Lakuṇṭakabhaddiyattheravatthu
Yarzar M's summary:
There were certain novices who bothered an elder monk. However, the elder showed no resentment towards them. The Buddha heard the novices talking about the elder and explained that those free from depravities show no anger and resentment, but are unshaken, like a solid rock.