出身舍卫城富裕人家的比丘，被佛陀誉为禅修第一，因早年对戒律细节反复迟疑而被称作“疑惑者 Revata”。

A monk from a wealthy Sāvatthi family, declared by the Buddha chief among those who practised absorption (jhāna), known as ‘Revata the Doubter’ for his early scrupulousness about monastic rules.