遮字門，入諸法行不可得故
The practice (caryā)
Kumarajiva
入酌字門，悟一切法聚集足跡不可得故
Xuanzang
The syllable ŚCA is a door to all dharmas. because of the non-apprehension of good conduct ścaraṇa)
Conze
The syllable ŚCA [means] all mental phenomena are openings because of the non-recognition of moral behavior.
Jayarava