Manasara 57.25

57.25

tryaṃśaṃ tryardhamātraṃ syād bāhumūlaṃ rasāṃśakam
bāhudīrghaṃ kaviṃśāṃśaṃ kūrparaṃ sārdhamātrakam

the shoulder-head should be three parts and one and a half units; the armpit is six parts; / the length of the upper arm is twenty-one parts, and the elbow one and a half units;