The acutely accented (udātta) ī is substituted for the final of 1. asthi 2. dadhi 3. sakthi and 4. akṣi in the chandas (Vedas) when the case-affixes of the dual follow.,
As अक्षी꣡ ते इन्द्रपिङ्गले कपेरिव ॥ अक्षी꣡भ्यान् ते नासिकाभ्याम् ॥ In अक्षी the augment नुम् is not added to the stem before the vowel-beginning ending, because 7.1.73, which ordained नुम्, is superseded by the present sutra, and being once superseded, it is superseded for good. (सकृद् गतौ विप्रतिषेधे यद्बाधितं तद्बाधितमेव) ॥,