大乘起信論廣釋卷第三．四．五 4.59

4.59

論。所謂眾生至見諸佛故　釋曰。此遣外疑釋平等義。若謂能現平等緣用。何故眾生見差別耶。謂平等緣應平等機。即三賢上依三昧力悉見諸佛。身量平等無有彼此分齊之相。故云平等見諸佛也。

[Treatise:] That is to say, sentient beings, [through the power of samādhi, are able to] see the buddhas universally.
[Commentary:] This dispels an external doubt and explains the meaning of "universal." If it is said that they can manifest universal conditional activities, why do sentient beings see distinctions? This means that universal conditions respond to universal capacities; that is, those above the three stages of the worthy, relying on the power of samādhi, all see the buddhas. The measure of their bodies is universal and equal, without any mark of demarcation between self and other; hence it says "see the buddhas universally."