新華嚴經論 35.10

35.10

六從其背上出無數百千億二乘者，表背是背眾生之方所。還從其中出二乘眾，表二乘背佛大智大悲萬行利眾生事及法界體用故。

Sixth, from his back emerge countless hundreds of thousands of koṭis of followers of the two vehicles: this symbolizes that the back is the position of turning one's back on sentient beings. Emanating assemblies of the two vehicles from it symbolizes that the two vehicles turn their backs on the Buddha's great wisdom, great compassion, the myriad practices of benefiting sentient beings, and the essence and function of the dharmadhātu.