大毘盧遮那成佛經疏 10.49

10.49

此中以上怛𭌆字為體。多是如如義，囉是離塵垢義，伊是三昧也，即是如如無垢三昧，諸金剛智慧由此生也。吒字不成是半體，破壞體不成即是死義。由此三昧殺無明住地人也，已殺無明住地故。若衍底（丁以反）是勝義亦是生義，如了達如如，垢障淨除，得無勝之生，故為眾母。無勝而生，即是生諸金剛。金剛是無勝者，亦是生諸無勝人也。此無勝生亦名甘露生也。

Here, the syllable tri above is taken as the essence. Ta is the meaning of suchness; ra is the meaning of departing from dust and defilement; i is samādhi; this is the suchness stainless samādhi, from which the wisdom of all vajras is born. The syllable ṭa is incomplete, being half an essence; destruction of the essence without completion is the meaning of death. Through this samādhi one slays those abiding on the avidyāvāsanābhūmi; having already slain the avidyāvāsanābhūmi, jayanti has the meaning of victory and also the meaning of birth: like comprehending suchness and purifying defilements and hindrances, one attains invincible birth; therefore she is the mother of all. Arising unconquered means giving birth to all vajras. The vajras are the unconquered ones, and it also means giving birth to all unconquered persons. This unconquered birth is also called amṛta-birth.