As in dharmadhātu धर्मधातु
駄字門，入諸法性不可得故。
The syllable DHA is a gateway because the nature of dharmas (dharmatā) cannot be found.
- Kumarajiva
入達字門，悟一切法界性不可得故
The syllable DHA is a gateway because the nature of the dharmadhātu cannot be found.
- Xuanzang
馱(去)字門一切法界不可得故
The syllable DHA is a gateway because the entire dharmadhātu cannot be found.
- Amoghavajra
DHA because of that of the Realm of Dharma (dharmadhātu)
- Conze
The syllable DHA is an opening because of the non-apprehension of the dharmadhātu of all mental phenomena.
- Jayarava