華嚴一乘教義分齊章 1.37

1.37

Fourth, dividing into four vehicles also has three kinds: First, taking the One Vehicle and the Three Vehicles to make four; this sets out the one as distinct from the three, and combines the two śrāvakas. Second, taking the One Vehicle, the Three Vehicles, the Hīnayāna, and humans and devas to make four; this is the intention of total division. Third, taking the Three Vehicles and humans and devas to make four, which can be understood by analogy with the above.