俱舍論記 9.178

9.178

「鉢剌底至是緣起義」者，經部答，或說一切有部答。依聲明論，有字緣、字界。其字界，若有字緣來助，即有種種義起。鉢剌底是至義，是字緣。醫底界是行義，是字界，界是體義。此醫底界由先鉢剌底助力，醫底界義轉變成緣。若助訖成緣，應言鉢剌底（丁履反）帝夜（叐何反），此翻名緣。所以然者？諸緣勢力起果名行，未至之時未成緣義。若緣力至果或諸緣相至，方得名緣。故造字家於行界上加至助緣行成緣義。參是和合義，嗢是上升義，此二是字緣。鉢地界是有義，是字界。鉢地有界藉前參嗢合升字緣助力轉變成起。若助訖成起，應言參牟播陀，此翻名起。所以然者？明諸有法要與緣合便得上升，故名為起。故造字家於有界上加合升緣，有成起義。故總結言，由此有行法至於四緣已和合升起，是緣起義。

Regarding "prati- ... is the meaning of dependent origination": the Sautrāntika answers, or the Sarvāstivāda answers. According to the treatises on grammar (śabda-śāstra), there are affixes (pratyaya) and verbal roots (dhātu). As for the verbal root, when an affix comes to assist it, diverse meanings arise. Prati means "approaching" (to reach), and is a prefix. The verbal root *i-* has the meaning of "going"; it is a verbal root, and "root" means intrinsic nature. Through the assistance of the preceding *prati-*, the meaning of this verbal root *i-* is transformed into "depending" (pratyaya). When the assistance is completed to form "condition/depending", one should say *pratītya*, which is translated as "depending on" (緣). Why is this? The capacity of various conditions to give rise to an effect is called "going"; before they have approached, the meaning of a condition is not yet accomplished. Only when the power of the conditions reaches the effect, or when the conditions reach one another, does it obtain the name of "condition". Therefore, grammarians add the prefix meaning "approaching" above the root for "going" to make it express the meaning of "depending/condition". *Sam-* means "combination" (coming together), and *ud-* means "rising up"; these two are prefixes. The root *pad-* means "being/moving", and is a verbal root. Relying on the assistance of the prefixes *sam-* and *ud-* for coming together and rising up, the root *pad-* is transformed into "originating". When the assistance is completed to form "originating", one should say *samutpāda*, which is translated as "origination". Why is this? It explains that existing dharmas must unite with conditions to rise up, and therefore it is called "origination". Therefore, grammarians add the prefixes for combining and rising above the root for being, so that being comes to have the meaning of origination. Thus, to summarize: that by which active dharmas, having approached the four conditions, combine and arise, is the meaning of "dependent origination" (pratītyasamutpāda).