The affix añ comes in the sense of 'modification or part' after a word having anudātta - grave accent on the first syllable.,
This debars अण् ॥ Thus दाधित्थम्, कापित्थम्, माहित्थम् ॥ The word दधित्थम् is an upapada-samasa of दधि + स्थ, the स being changed to त; and it is finally acute by कृदुत्तरपद प्रकृतिखर ॥,