Valmiki Ramayana Yuddha Kanda Sarga 22 Shloka 29

तदा then, रामः Rama, तम् , अब्रवीत् said, वरुणालया abode of Varuna, मे my, शृणु listen, अमोघः unfailing, आयम् this, महाबाणः mighty arrow, कस्मिन् in which, देशे location, निपात्यताम् should it be allowed to descend down.

Then Rama said, "O abode of Varuna, listen to me. In which location should I allow this unfailing mighty arrow to descend?"