觀無量壽佛經義疏 3.78

3.78

「『其圓光中有五百化佛，如釋迦牟尼佛，一一化佛有五百化菩薩，無量諸天以為侍者。』」如釋迦者，丈六身也。二、身光。

"[The Buddha said:] 'Within that halo are five hundred transformative Buddhas like Śākyamuni Buddha, and each transformative Buddha is attended by five hundred transformative bodhisattvas and immeasurable devas.'" Being "like Śākyamuni" means possessing a sixteen-foot body. Second, the light of the body.