瑜伽論記 24.40

24.40

下約二地明修身念，隨觀五蘊四種念住并名身念，以觀色身名身，皆名身故，初緣色身，或復由他愛與非愛增語有對觸現行時。

Below, it clarifies the cultivation of mindfulness of the body in terms of the two stages. Accompanying the contemplation of the five aggregates, the four applications of mindfulness are all called mindfulness of the body; because contemplation of the physical body is called "body" and they are all termed "body." At first, one takes the physical body as an object, or again, when contact that is designation-based, resisting, agreeable, and disagreeable manifests due to another.