摩訶止觀 7.129

7.129

道品、無畏，宛轉相攝。若修道品、六度，即是修無畏，住佛威儀也。《大論》云：「內心具足名為『力』；外用無怯名『無畏』。」《十住毘婆沙》云：「一法名無畏，云何言四？於四事中無疑，故名『四』。」佛應於一切法無畏，云何但四？舉大要，開事端，餘亦無畏也。

The factors of the path and the grounds of fearlessness mutually subsume one another. Practising the factors of the path and the six perfections is precisely practising the grounds of fearlessness and abiding in the Buddha's deportment. The Mahāprajñāpāramitopadeśa states: "Inner perfection is called 'power'; outer application without timidity is called 'fearlessness'." The Daśabhūmika-vibhāṣā states: "A single Dharma is called fearlessness; why speak of four? Because there is no doubt with regard to four matters, it is called 'four'." A Buddha should be fearless regarding all dharmas, so why only four? By citing the essentials and opening the main points, the rest are also known to be without fear.