瑜伽論記 6.437

6.437

解堪忍、柔和中，墮在鉢中為鉢所攝者，泰云：食入鉢內名墮鉢中，婆羅門法清淨塗少地置鉢上食，但食人塗地上即為鉢所攝。

In explaining forbearance and gentleness, regarding 'falling into the bowl and being subsumed by the bowl', Tai says: food entering the bowl is called 'falling into the bowl'. In the method of the Brahmins, they purify and smear a small patch of ground to place the bowl of food upon; whenever a person who eats smears the ground, it is subsumed by the bowl.