一位阿罗汉，本为舍卫城居士 Datta，因不知情下与母亲、姊妹乱伦而痛悔出家，在恒河岸边多年苦行沉默后证悟。

An Arahant who, as the householder Datta of Sāvatthi, was overcome with anguish on unknowingly committing incest with his mother and sister, and became enlightened after years of silent austerity by the banks of the Gaṅgā.