Mahasamayasutta 4.4

4.4

Yepi te, bhikkhave, bhavissanti anāgatamaddhānaṃ arahanto sammāsambuddhā, tesampi bhagavantānaṃ etapparamāyeva devatā sannipatitā bhavissanti seyyathāpi mayhaṃ etarahi.

Those who will be perfected ones, fully awakened Buddhas in the future will also have gatherings of deities that will be at best like the gathering for me now.