俱舍論記 7.74

7.74

「若執初起至猶如自在」者，牒轉計破。若言初起不待餘因後待因者，即初所起應無始成，不待餘因故，猶如自在。

Regarding "If you hold that the initial arising... just like Īśvara": this cites the shifted position to refute it. If you say that the initial arising does not depend on other causes, while subsequent arisings do depend on causes, then that which is first produced should have been established without beginning, because it does not depend on other causes, just like Īśvara.