The affix ṭa comes after the verb car 'to go' when a case-inflected word in composition with it denotes a location.,
The word adhikarana of the last sutra is understood in this. As कुरुषु चरति = कुरुचरः 'who goes among the Kurus'. मद्रचरः 'who goes among the Madras'.
Of the affix ट the real affix is अ, the letter ट being indicatory, showing that the feminine of these words is formed by the affix ङीप्. (See. 4.1.14), as कुरुचरी, मद्रचरी ।,