Manasara 31.38

31.38

mūlaharmye samaṃ vāpi tripādaṃ vārdhameva vā
ekabhūmi dvibhūmiṃ vā mūlaharmyākṛti tu vā

Equal to the main edifice, or three-fourths, or one-half, / with one storey or two storeys, or in the shape of the main edifice;