Arthashastra
अप्रतिविहिताः सुख अवस्था बिभृयुः, परं चत्वारि वर्षाण्य् अष्टौ वा ज्ञातयः ॥
If they are not so provided with, their well-to-do gnátis should maintain them either for four or eight years.
english translation
aprativihitAH sukha avasthA bibhRyuH, paraM catvAri varSANy aSTau vA jJAtayaH ॥
hk transliteration by Sanscript