The Buddhas, the Most Honorable Bipeds,
Expound the One Vehicle because they know:
“All things are devoid of substantiality.
The seed of Buddhahood comes from dependent origination.”

[This refers to] the doctrine of the [supreme or highest] emptiness suggesting that li is the nondual ultimate.

The Buddha provides the conditions (pratyaya) for li to arise. Now that li is not dual, how can it afford to be threefold? “For this reason they preach the One Vehicle.”