Manasara 13.41

13.41

kampamardhaṃ tathā karṇaṃ kampamardhaṃ tathāmbujam
dvibhāgaṃ ratnapaṭṭaṃ syāddalārdhaṃ kṣepaṇārdhakam

The fillet is half, likewise the ear; the fillet is half, likewise the lotus; / two parts should be for the gem-band; the petal is half, the projection is half;