Arthashastra
भूम्य् अनन्तरः प्रकृति मित्रः, तुल्य अभिजनः सहजः, विरुद्धो विरोधयिता वा कृत्रिमः ॥
He whose friendship is derived from father and grandfather, and who is situated close to the territory of the immediate enemy of the conqueror is a natural friend; while he whose friendship is courted for self-maintenance is an acquired friend.
english translation
bhUmy anantaraH prakRti mitraH, tulya abhijanaH sahajaH, viruddho virodhayitA vA kRtrimaH ॥
hk transliteration by Sanscript