俱舍論記 18.174

18.174

「此中書印至五蘊為體」者，此下釋後兩句。書謂手書，印謂手印，並身工巧。以前身業為自性，及彼能發心、心所法。總而言之，五蘊為體。應知書印以能書、印身業為體，非所書、印。故《婆沙》一百二十六云「此中書者非所造字，但是所有能造字法。此能成字，故說為書（解云：書之與字，眼目異名，非是不相應中字也）。」又云「此中印者，非所造印，但是所有能造印法，此能成印故說為印。」又《正理》云「非諸字像即名為書、所雕印文即名為印，然由業造字像、印文，應知名為此中書、印。」

Regarding "Among these, writing and sealing... have the five aggregates as their nature": this explains the following two lines. Writing refers to writing by hand; sealing refers to stamping by hand; both are physical crafts. They take the bodily karma mentioned before as their intrinsic nature, as well as the mind and mental factors capable of initiating them. Generally speaking, they take the five aggregates as their nature. One should know that writing and sealing take the bodily karma that is capable of writing and stamping as their nature, not the things written or stamped. Therefore the Mahāvibhāṣā, fascicle 126, states: "Here, 'writing' is not the characters produced, but is simply whatever factor is capable of producing characters. Because this can accomplish characters, it is spoken of as writing (Explanation: 'writing' and 'character' are different names for the same referent, not the phonemes among the non-concomitant factors)." It also states: "Here, 'sealing' is not the seal produced, but is simply whatever factor is capable of producing seals. Because this can accomplish seals, it is spoken of as sealing." Furthermore, the Nyāyānusāra states: "The images of characters are not themselves called writing, nor are the carved seal impressions called sealing; rather, through the karma that produces the images of characters and the seal impressions, one should know that these are called 'writing' and 'sealing' in this context."