四分律行事鈔資持記 3.816

3.816

斥非中，初文。入道緣者，善根由發故。淨土因者，心清淨故。出離軼者，期解脫故。軼即是轍，車所從之道也。

In the section reprimanding errors, the first text: 'conditions for entering the Path' is because wholesome roots arise from them; 'causes for the Pure Land' is because the mind is pure; 'the tracks of renunciation' is because one aspires to liberation. 'Tracks' (die) means ruts (che), the path followed by carriages.