In Buddhism, the Sakadāgāmin, "returning once" or "once-returner" is a partially enlightened person, The second stage of The Four Stages of Awakening...

The first moment of the attainment is termed the path of stream-entry (sotāpatti-magga), which cuts through the first three fetters. The person who experiences it is called a stream-winner (sotāpanna)...

In the Four Noble Truths, suffering is birth, aging, illness, death, union with what is displeasing, separation from what is pleasing, not getting what one wants; in brief, the five aggregates subject to clinging are suffering, and the Buddha also taught that the way to end suffering is to practice the Noble Eightfold Path: right view, right intention, right speech, right action, right livelihood, right effort, right mindfulness, right concentration...