大方廣佛華嚴經疏 49.30

49.30

第八漸降成熟喻，喻無變聲，以皆至究竟故。上先照高山，以顯頓圓；此先小後大，即是漸圓。將降法雨者，思欲說一也。未便即降者，恐破法墮惡道故。先興法雲，是說方便。方便含實，如雲含水。

Eighth, the analogy of gradual descent bringing to maturity illustrates the immutable voice, because all reach the ultimate. Above, it first illuminated the high mountains to reveal the sudden and perfect; here, it proceeds from small to great, which is the gradual and perfect. That it is about to send down the rain of Dharma means considering the desire to speak the one [vehicle]. That it does not immediately send it down is for fear of destroying the Dharma and causing beings to fall into evil paths. First raising the Dharma-clouds represents expounding expedient means. Expedient means contain the real, just as clouds contain water.