無量壽經連義述文贊 3.119

3.119

經曰「乃至今世」至「吾助汝喜」者，述云：此後、如來正慶也。藉久遠因值佛聞法，即可慶喜故。

On the sūtra's words from "Down to this present lifetime" to "I assist in your joy": the commentary states: This subsequent part is the Tathāgata's direct celebration. Relying on causes from the distant past, one encounters the Buddha and hears the Dharma; hence it is truly worthy of celebration and joy.