Surya Siddhanta
सुसाधितायाम् अवनौ बिन्दुम् कृत्वा ततो लिखेत् । सप्तवर्गाङ्गुलेनादौ मण्डलम् वलनाश्रितम्॥
Having marked at first a point on the floor levelled with water, describe, on the point as centre with 49 digits as radius, a circle in which the valaná (as found in the fourth Chapter) i is to be marked.
english translation
susAdhitAyAm avanau bindum kRtvA tato likhet । saptavargAGgulenAdau maNDalam valanAzritam॥
hk transliteration by Sanscript