Mudgalapurana 4.31.40

4.31.40

praśastaṃ tad vrataṃ tena kṛtaṃ sarvatra bhūmipa |
śuklakṛṣṇacaturthījaṃ vrataṃ cakrurjanā bhuvi ||

That excellent observance was performed by him everywhere, O ruler of the earth; / on earth, people undertook the observance of the fourth [day] of the bright and dark fortnights.