An ārdhadhātuka affix beginning with a ta may optionally take the iṭ affix after the roots 1. iṣ 2. sah 3. lubh 4. ruṣ and 5. riṣ,
As एष्टा or एषिता ॥ The इष् 'to wish' (VI. 59) is taken here, and not the इष् (IV. 19. IX. 53) of the Divadi and Kryadi class. Of the Divadi इष् 'to send, to go ' we have invariably प्रेषिता, प्रेषितुं, प्रेषितव्यं; and the इष् 'to repeat' of the Kryadi is governed also by this rule and has the same forms. Therefore some read the anuvritti of उदित् into this sutra. सह । सोढा । सहिता । लुभ । लोभिता । लोब्धा । रुष । रोष्टा । रोषिता । रिष् । रेष्टा । रेषिता ॥ Why do we say 'beginning with a त' ? Observe एषिष्यति ॥,