उभे अभ्यस्तम्

Though the word द्वे was understood in the sutra, the use of the word उभे 'both' indicates that the word Abhyasta applies to the two taken together and not to any one of them separately. The word abhyasta occurs in sutras 3.4.109, 6.1.32 &c. Thus sutra 6.1.189 declares \the first vowel of an Abhyasta gets the udatta accent\. The Abhyasta being the collective name of the both, the accent will fall on the first and not on the second, as in ददति dadati, the accent is on the first अ ॥ So also by 7.1.4 अत् takes the place of झ after an Abhyasta, therefore, दद + झि = दद + अति = ददति ॥ So also ददत् 6.4.112.,