Upatissa approaches the monk Assaji and enquires of his teaching. Assaji has not long been a monk so gives the short version: 'All things in this world arise from a cause and when those conditions change so those things cease.' Kazam! Upatissa gets it.

The two friends travel to meet the Buddha and ordain - they are now known as Sariputta and Moggallana and go on to become the two most senior disciples.