華嚴一乘教義分齊章 2.25

2.25

As for the first, according to the Hīnayāna, there are four stages: namely, upāya, seeing, cultivation, and the ultimate. It also speaks of the twelve abodes of the Hīnayāna as the ultimate, and speaks of the nine grounds and eleven grounds of the three realms, as extensively explained in the Hīnayāna treatises. Second, regarding non-retrogression: here, through cultivation, when one reaches the stage of patience (kṣānti), one attains non-retrogression. The characteristics of practice are also as explained in those treatises. Question: "Why are the characteristics of the Hīnayāna stages of practice not extensively demonstrated?"
Answer: "The intention here is to demonstrate the differences in teachings through the distinctions in meaning; and since the Hīnayāna differs from the Mahāyāna, there is no doubt in principle, so it need not be discussed."