瑜伽師地論略纂 9.19

9.19

論云「乃至七日七夜能正安住」者，明入定能至七日七夜安住也。何故不言多時，唯言七日等者？彼欲界中，段食經七日故。若過七日，出定已其身即壞，故不得經多時。又且約爾所時今而方入滅定，不癈多年月也。若過七日已出定，其身即壞；若七日內出定，其身不壞。今約不壞時為論，但言七日。　問曰：過七日已入滅定，若爾，出定應死。義云：不然。多時入定，定力持故不死。今亦出定，即入有心定故，亦不死。　問云：亦出滅定，滅定不持身故，壞不壞耶？答曰：壞。

Regarding the śāstra's statement: "and can properly abide for up to seven days and seven nights": this clarifies that entering the concentration one can abide for up to seven days and seven nights. Why does it not speak of a longer time, but only of seven days and so forth? Because in that desire realm, solid food lasts for seven days. If one exceeds seven days, upon emerging from concentration the body will disintegrate; therefore, one cannot remain for a long period. Furthermore, this provisionally refers to the time after which one then enters the cessation attainment (nirodhasamāpatti), not precluding many months and years. If one emerges from concentration after exceeding seven days, the body disintegrates; if one emerges from concentration within seven days, the body does not disintegrate. Now, discussing the time of non-disintegration, it merely says seven days. Question: If one enters the cessation attainment after exceeding seven days, should one die upon emerging from concentration? The meaning says: Not so. If one enters concentration for a long time, because the power of concentration sustains it, one does not die. Now also, upon emerging from concentration, because one immediately enters a concentration with mind, one also does not die. Question: If one also emerges from the cessation attainment, since the cessation attainment does not sustain the body, does it disintegrate or not? Answer: It disintegrates.