維摩經略疏 6.61

6.61

「即聞至得去」，四、空聲勸捨。空中聲者，關河舊解云：是化魔菩薩因機助化，汝向欲施持世，今淨名索之，何得不與？與則不違本心，乃可得去。或是淨名空中出聲，為調魔故。或釋迦法身毘盧遮那之聲，如《普賢觀》所明。

From "Then he heard" to "could then depart," fourth, a voice in the air urges him to let them go. Regarding the voice in the air, the ancient commentary from Guānhé says: this was a bodhisattva who transforms māras, assisting the conversion according to the opportune moment: "You just now wished to give them to Maitreyamaṇḍalaputra, and now Vimalakīrti asks for them—how can you not give them? If you give them, you will not violate your original intention, and only then may you leave." Or it was a voice emitted by Vimalakīrti in the air in order to tame the māra. Or it was the voice of Vairocana, the dharmakāya of Śākyamuni, as explained in the Samantabhadra Contemplation Sūtra.