An affix -- prāgdīvyato'ṇ [[4.1.83]] etc., comes after a word in the Genitive -6th-Case in construction in the sense of 'a modification thereof'.,
The word विकार means the change of condition of the original. The word तस्य, though its anuvritti could have been supplied from the previous sutras, has been repeated here, in order to show that the governing force of शेषे 4.2.92 does not extend further. The affixes taught, therefore, under शेषे (4.2.92 &c), such as घ, ख &c. have not the sense of तस्य विकार ॥
No affix has been taught here in this sutra: the general affix अण् 4.1.83 therefore will come in this sense, as well as the affixes to be taught hereafter. To give an example under this sutra, we must take such a word which is not governed or provided for, by the subsequent sutras. That is the word must not denote a living animal for to it अञ् 4.3.154 applies; it must have udatta on the first syllable, for an anudattadi will have अञ् 4.3.140; it must not have a Vriddhi vowel आ, ऐ, or औ in the first syllable, to which मयट् 4.3.144 applies; and it must not be a word specifically mentioned in any one of the following aphorisms. Thus it applies to the words अश्मन् and भस्मन् formed by मनिन् (UnIV. 146,145) and to मृतिका formed by तिकन् 5.4.39 which are adyudatta owing to नित् accent. Thus अश्मनो विकारः = आश्मनः ॥ The टि is sometimes elided. (6.4.144 Vart) As आश्मः ॥ So also भास्मनः and मार्तिकः ॥,