Mahāparinibbāna Sutta 1.4.9

1.4.9

Kinti te, ānanda, sutaṃ, ‘vajjī apaññattaṃ na paññapenti, paññattaṃ na samucchindanti, yathāpaññatte porāṇe vajjidhamme samādāya vattantī’”ti?

Ānanda, have you heard that the Vajjis don’t make new decrees or abolish existing decrees, but proceed having undertaken the ancient Vajjian principles as they have been decreed?”