法華論疏 3.460

3.460

言憶念如來有此舌相異一切世間故，佛語必可信受。又舌相正主說法，亦是說力。二謦欬聲令聞者，羅什經直明謦欬，此論意謦欬出聲說偈，令十方聞修行不放逸故。

This means that being mindful that the Tathāgata possesses this mark of the tongue which is different from all worldly beings, the Buddha's words can certainly be believed and accepted. Furthermore, the mark of the tongue primarily governs the expounding of the Dharma; thus it is also the power of exposition. Second, the sound of coughing making them hear: Kumārajīva's sūtra simply explains it as coughing, but the treatise's intention is that coughing produces sound and expounds verses, causing the ten directions to hear and practice without indolence.