瑜伽論記 11.292

11.292

測云：以尋伺等起諸言說，第二靜慮已上離彼尋伺起言說因故名默然樂味，而化有情故捨諸靜慮受欲界生饒益有情之也。

Ce states: "Because speech arises from investigation, reflection, and so forth, from the second dhyāna upward, being free from those causes that give rise to speech—investigation and reflection—is called the delightful taste of silence. Yet in order to transform sentient beings, one abandons the dhyānas, takes birth in the desire realm, and benefits sentient beings."