Mayamatam 12.105

12.105

aṣṭau dvādaśa vā grāhyā madhyame tumahattare
ṛjudīrghāṅgulinyāsā samasaṃkhyā hi puṃstvabhāk

Eight or twelve [digits] should be taken in intermediate and larger [edifices]; / laid with straight, elongated digits, an even number possesses masculinity;