Manasara 19.16

19.16

tattribhāgaṃ tu tuṅgaṃ syātpañcāṃśaṃ tryaṃśameva vā
sthitasya lupamūlaṃ tu tadūrdhve nāsikandharam

Its height should be three of those parts, or five parts, or three parts; / of what stands, the base of the rafter [is there], and above that is the neck of the gable dormer;