首楞嚴義疏注經 6.166

6.166

此娑婆界大地、山河俱時不現，唯見十方微塵國土合成一界，梵唄、詠歌自然敷奏。

and the great earth, mountains, and rivers of this Sahā world simultaneously disappeared, and there was only seen the dust-mote lands of the ten directions united into a single realm, where brahma-chants and lyrical songs spontaneously unfolded.