For the final of agni is substituted the long ī when 1. soma or 2. varuṇa follow.,
Thus अग्नीषोमौ, अग्नीवरुणौ ॥ The स is changed to ष by 8.3.82.,
Adhyāya 6 · Pāda 3 · Rule 27
For the final of agni is substituted the long ī when 1. soma or 2. varuṇa follow.,
Thus अग्नीषोमौ, अग्नीवरुणौ ॥ The स is changed to ष by 8.3.82.,