首楞嚴義疏注經 2.155

2.155

"Ānanda! This great lecture hall opens wide to the east: when the solar disc rises into the sky, there is bright radiance; at midnight during the dark moon, when clouds and mist bring gloom and obscurity, it is again dark; through the crevices of doors and windows, one again sees passage; between walls and eaves, one again observes obstruction; at places where discrimination occurs, one again sees conditions; in impenetrable space, emptiness is omnipresent; where there are hazy and turbid forms, one is entwined by turbid dust; and when clear weather collects the vapors, one again observes purity."