俱舍論疏 9.53

9.53

On the Śāstra's 'Because the egg-born... there is no fault in speaking of entering the womb': this is the answer. Here there are two senses: first, because one must first enter the womb, it is spoken of as entering the womb; second, because one will be egg-born, it is called egg-born. It is really cooking rice and grinding wheat, but one speaks of 'cooked rice' and 'roasted flour', establishing the name based on what it will become. The production of conditioned dharmas also takes the name of the result.