Agnipurana 104.2

104.2

adribhāgena(3) garbhaḥ syāt piṇḍikā pādavistarāt /
pañcabhāgīkṛte kṣetrentarbhāge(4) tu piṇḍikā //

the sanctum should be half a part, and the pedestal a quarter-part in width.
When the site is divided into five parts, the pedestal is in the interior portion;