Manasara 52.46

52.46

saptaviṃśāṅgulaṃ caiva aṣṭaviṃśāṅgulaṃ tathā
navaviṃśatimātraṃ syālliṅgatāramiti smṛtam

Twenty-seven digits, twenty-eight digits,
and twenty-nine digits is remembered as the liṅga width.