首楞嚴義疏注經 3.542

3.542

我願成道本為度生，度生之心非暫時爾，盡未來際，眾生界盡，我方入滅。斯願至重，故請證明。

My vow to attain the Way is originally for delivering sentient beings; this mind of delivering sentient beings is not merely temporary—to the end of future time, until the realm of sentient beings is exhausted, only then will I enter extinction. This vow is extremely momentous, and therefore he requests verification.