瑜伽論記 9.397

9.397

獲得乃至正加行滿者，由久修習有漏加行感勝身口極善調順有堪任故，故依此身心能入初地順斷二障。

Regarding "obtains, up to: fulfillment of correct preparatory practice": because of long practicing mundane preparatory practice, one brings about a superior body and speech that are extremely well tamed and compliant, possessing competence; hence, relying on this body and mind, one is able to enter the first bhūmi and conform to severing the two obstructions.