Digha Nikaya 1:43
SUJATOKinti te, ānanda, sutaṁ, ‘vajjīnaṁ arahantesu dhammikā rakkhāvaraṇagutti susaṁvihitā, kinti anāgatā ca arahanto vijitaṁ āgaccheyyuṁ, āgatā ca arahanto vijite phāsu vihareyyun’”ti?
Ānanda, have you heard that the Vajjis organize proper protection, shelter, and security for perfected ones, so that more perfected ones might come to the realm and those already here may live in comfort?”