瑜伽論記 6.452

6.452

又損生餘一生在名一來果，其名一往來者，據十四生為論，若據七生為論或名一往，人中得第二果一往天上即入涅槃，若天上得第二但一來人中般涅槃。

Furthermore, impairing rebirths with one rebirth remaining is called the once-returner fruit. As for its designation 'one going and returning', it is discussed based on fourteen rebirths; if discussed based on seven rebirths, it may be called 'one going': attaining the second fruit among humans, one goes once to heaven and immediately enters nirvāṇa; if attaining the second in heaven, one merely comes once to humans and enters parinirvāṇa.