妙法蓮華經文句 2.160

2.160

「身心不動」者，與所緣之處相應也。身之本源湛若虛空，心之理性畢竟常寂，大通智勝身體及手足，寂然安不動，其心常憺怕，未曾有散亂。身若金剛不可動轉，心若虛空無有分別，無量義處三昧法持於身心故不動也。稱為無量者，此定寂而常，照能知世間，從此一法出無量法也。若作序義，身法體動運，今令不動運；心法體分別，今令不分別，序義明矣。

Regarding "his body and mind were motionless": this means being in accord with the realm of objective focus. The original source of the body is serene like empty space; the fundamental nature of the mind is ultimately and perpetually tranquil. Mahābhijñā-jñānābhibhū's body and limbs were quiescent and securely motionless, his mind was perpetually serene and never scattered. The body is like a vajra, unshakeable and unswerving; the mind is like empty space, without discrimination. The Dharma of the Samādhi of the Abode of Immeasurable Meanings sustains body and mind, so they are motionless. As for calling it 'immeasurable', this concentration is quiescent yet perpetually illuminating, capable of knowing the worldly realms, and from this one Dharma issuing immeasurable dharmas. If treated in terms of the meaning of a prologue: the essence of bodily dharmas is movement and activity, but now he causes them not to move or be active; the essence of mental dharmas is discrimination, but now he causes them not to discriminate. The meaning of the prologue is thus clarified.