四分律行事鈔資持記 2.628

2.628

隔礙中，引律緣。雖無離罪，不妨失受，故得成礙。澁字寫錯，律作嶮難。下引《僧祇》。彼無勢分，捉鑰有梯，並可入故；反此成礙。

In separation obstacle, it cites the vinaya conditions. Although there is no offense of separation, this does not prevent losing formal determination, so it succeeds in becoming an obstacle. The character *se* (澁) is a scribal error; the vinaya has *xiannan* (嶮難, steep and difficult). Below, it cites the Mahāsāṃghika-vinaya: there being no perimeter buffer, holding the key and having a ladder, one can enter; the opposite of this constitutes an obstacle.