Matsya Purana 262.16

262.16

mekhalā tattribhāgena khātañcaiva pramāṇataḥ.
athavā pādahīnantu śobhanaṃ kārayetsadā .. 262.15

Then the girdle is to be made of a dimension of the three parts of the Liṅga or the girdle should be without any foot Only the prescribed limit should be dug or it should be artistically made without any division—15