Arthashastra
तद् अभावे अप्य् असोदर्यं सपिण्डं कुल्यं वा आसन्नम् ॥
If there are no brothers to her lost husband, she may marry one who belongs to the same gotra as her husband's or relative.
english translation
tad abhAve apy asodaryaM sapiNDaM kulyaM vA Asannam ॥
hk transliteration by Sanscript