As in viṭhapana विठपन - Illusory Creations
入搋字門，悟一切法積集性不可得故
Xuanzang
咤(上)字門一切法長養不可得故
Amoghavajra
The syllable THA is a door to all dharmas because of the non-apprehension of fabricated appearances (viṭhapana)
Conze
The syllable ṬHA [means] all mental phenomena are openings because of the non-recognition of the illusory creations (viṭhapana)
Jayarava