The affix ṅīṣ is used in the feminine after every other word expressive of colour and ending with an anudātta accent.,
The word वा of 4.1.38 does not govern this sutra. The word अन्यतः means in other cases than those governed by the last aphorism i.e. after words which have not त as penultimate. The difference between nip and nish affixes consists in accent, the former being gravely accented (111. 1. 4) and the latter acute. Thus सारङ्गी, कल्माषी, शबली ॥
When the word does not express color, this rule does not apply. As खट्वा 'a bed-sted'.
When the word does not end with a gravely accented vowel, this will not apply, as, कृष्णा , कपिला ॥,