勸發菩提心集 3.123

3.123

靜慮九門者：自性，謂諸菩薩於菩薩藏聞思為先，所有妙善世出世間，心一境性，心正安住，或奢摩他品、或毘鉢舍那品、或雙運道靜慮自性。

The nine gates of dhyāna: Intrinsic nature means that bodhisattvas, preceded by hearing and thinking on the Bodhisattva Piṭaka, possess all excellent mundane and supramundane one-pointedness of mind, wherein the mind correctly abides, belonging either to the class of śamatha, or to the class of vipaśyanā, or being the intrinsic nature of dhyāna of the yoking of both in the unified path.