Balapanditasutta 34.2

34.2

Idha, bhikkhave, rañño khattiyassa muddhāvasittassa tadahuposathe pannarase sīsaṃnhātassa uposathikassa uparipāsādavaragatassa dibbaṃ cakkaratanaṃ pātubhavati sahassāraṃ sanemikaṃ sanābhikaṃ sabbākāraparipūraṃ.

It’s when, on the fifteenth day sabbath, an anointed aristocratic king has bathed his head and gone upstairs in the royal longhouse to observe the sabbath. And the heavenly wheel-treasure appears to him, with a thousand spokes, with rim and hub, complete in every detail.