When the Bodhisattva Avalokitesvara was engaged in the practice of the deep Prajnaparamita, he perceived that there are the five Skandhas; and these he saw in their self-nature to be empty. "O Sariputra, form is here emptiness, emptiness is form; form is no other than emptiness, emptiness is no other than form; that which is form is emptiness, that which is emptiness is form. The same can be said of sensation, thought, confection, and consciousness."
Manual of Zen Buddhism (Unabridged) - Daisetz Teitaro Suzuki
When the Bodhisattva Avalokitesvara was engaged in the practice of the deep Prajnaparamita, he perceived that there are the five Skandhas; and these he saw in their self-nature to be empty. "O Sariputra, form is here emptiness, emptiness is form; form is no other than emptiness, emptiness is no other than form; that which is form is emptiness, that which is emptiness is form. The same can be said of sensation, thought, confection, and consciousness."