Agnipurana 53.4

53.4

aṣṭāgraṃ vaiṣṇavaṃ bhāgaṃ sidhyatyeva na saṃśayaḥ /
ṣoḍaśāsraṃ tataḥ kuryāddvātriṃśāsraṃ tataḥ punaḥ //

The octagonal Vaiṣṇava portion is then successfully produced; there is no doubt. / Then one should make it sixteen-sided, and then thirty-two-sided;