摩訶止觀 1.94

1.94

「推無作」者：夫法性與一切法無二無別，凡法尚是，況二乘乎？離凡法更求實相，如避此空，彼處求空。即凡法是實法，不須捨凡向聖。經言：「生死即涅槃，一色一香皆是中道。」是名「推無作四諦上求下化發菩提心」。

"Investigating the unconditioned": the dharmatā and all phenomena are neither dual nor distinct; ordinary phenomena are already it, how much more so the two vehicles? Seeking true reality apart from ordinary phenomena is like avoiding this emptiness to seek emptiness elsewhere. Ordinary phenomena are themselves the real phenomena; there is no need to abandon the ordinary to head toward the noble. A sūtra states: "Samsāra is nirvāṇa; a single color, a single scent, are all the middle way." This is called "giving rise to the bodhicitta by investigating the four truths of the unconditioned to seek above and transform below."