瑜伽論記 16.339

16.339

七、釋經中四句。已生有情者，謂生有本有不取死有，死有不由食住故。求有有情者，即是中有。已生有情由食安住如前說者，如前食事中說也。言由三門故至依識而有者，謂由段思觸三食門故增長業惑，業惑依識即增長識。

Seventh, explaining the four phrases in the sūtra. 'Sentient beings already born' refers to birth-existence and fundamental existence, excluding death-existence, because death-existence is not sustained by food. 'Sentient beings seeking existence' refers to the intermediate existence. That 'sentient beings already born are sustained by food as previously stated' is as explained previously under the subject of food. As for the statement 'proceeding through three doors up to existing dependent on consciousness': this means that through the three doors of the foods of morsel food, mental volition, and contact, karma and afflictions increase; when karma and afflictions depend on consciousness, consciousness is increased.