四分律行事鈔資持記 2.274

2.274

問中。上明相須，其功一等；招生感果，必有親疎，故須顯示。

In the question: above it was explained that they mutually require each other and their functions are of equal rank; yet in bringing about rebirth and evoking fruition, there must be proximate and remote [factors], which must therefore be shown.