The word uṣṭra retains its accent before sādi and vāmi,
Thus उ꣡ष्ट्रसादि and उ꣡ष्ट्रवामि ॥ The word उष्ट्र is derived from उप् by ष्ट्रन् affix (Unadi IV. 162) and has acute on the first (VI. I. 197). This is either a Karmadharaya or a Genitive compound. In some texts the above examples are given with a visarga in the masculine, and not Neuter.,