Daṇḍasutta
Evaṁ me sutaṁ— ekaṁ samayaṁ bhagavā sāvatthiyaṁ viharati jetavane anāthapiṇḍikassa ārāme. Tena kho pana samayena sambahulā kumārakā antarā ca sāvatthiṁ antarā ca jetavanaṁ ahiṁ daṇḍena hananti. Atha kho bhagavā pubbaṇhasamayaṁ nivāsetvā pattacīvaramādāya sāvatthiṁ piṇḍāya pāvisi. Addasā kho bhagavā sambahule kumārake antarā ca sāvatthiṁ antarā ca jetavanaṁ ahiṁ daṇḍena hanante.
A Stick
So I have heard. At one time the Buddha was staying near Sāvatthī in Jeta’s Grove, Anāthapiṇḍika’s monastery. Now at that time, between Sāvatthī and the Jeta Grove, several boys were hitting a snake with a stick. Then the Buddha robed up in the morning and, taking his bowl and robe, entered Sāvatthī for alms. He saw the boys hitting the snake.