觀無量壽佛經義疏 3.76

3.76

「『頂有肉髻。』」二、觀光，二：初、頂光；二、身光。初、頂光，二：初、光量；二、光中變化。初、光量。

"[The Buddha said:] 'On the crown of his head is an uṣṇīṣa.'" Second, contemplating the light, which has two parts: first, the light of the crown; second, the light of the body. First, the light of the crown, which has two parts: first, the measure of the light; second, the transformations within the light. First, the measure of the light.