Manasara 9.13

9.13

ṣaṣṭe tu daṇḍamārabhya dvidvidaṇḍavivardhanāt
saikārkatriṃśataṃ daṇḍāt trisaptadaśavistṛtam

Beginning with sixty measuring rods, increasing by two measuring rods each, / up to one hundred and thirty-one measuring rods, it is thirty-seven [breadths] in extent.