翻譯名義集 6.47

6.47

【鉢羅奢佉】此云形位，具諸根形四支差別。《俱舍》以此胎五七日，名胎中五位；六七日，名髮毛爪齒位；七七日，名具根位，五根圓滿故。所言根者，增上出生，名之為根。五識藉彼為增上緣而得生故。又具五義，名之為根，嚴續依發及遍別故。從此五七，至未出胎，並名六入。言胞胎者，《說文》云：「兒生裹衣者曰胎。」《爾雅》：「胎，始養也。」

[Praśākhā]
Here translated as "stage of bodily form" (形位), having the forms of all sense faculties and the differentiation of the four limbs. The Kośa regards this fifth seven days in the womb as the end of the five stages in the womb; the sixth seven days is called the stage of hair, fur, nails, and teeth; the seventh seven days is called the stage of having complete faculties, because the five faculties are perfected. What is called "faculty" (indriya) is named so because it produces through preeminence (adhipati), for the five consciousnesses rely upon them as predominant conditions to be produced. Furthermore, possessing five meanings, they are called "faculties": because of adornment, continuation, reliance, manifestation, and universal distinction. From this fifth seven days until leaving the womb, they are all collectively termed the "six bases of entering" (ṣaḍāyatana). As for the term "womb" (胞胎), the Shuowen says: "When a child is born, the enclosing garment is called tai (胎)." The Erya says: "Tai means the beginning of nourishment."