Valmiki Ramayana Aranya Kanda Sarga 57 Shloka 10
Original Shlokaइत्येवं चिन्तयन्रामश्श्रुत्वा गोमायुनिस्स्वनम्।।3.57.10।। आत्मनश्चापनयनान्मृगरूपेण रक्षसा। आजगाम जनस्थानं राघवः परिशङ्कितः।।3.57.11।।
1 source checked for this shloka
राघवः Rama, गोमायुनिस्स्वनम् the jackal's howl, श्रुत्वा on hearing, इत्येवम् like this, चिन्तयन् worried, मृगरूपेण in the form of a deer, रक्षसा by the demon, आत्मनः his, अपनयनात् due to being drawn away, परिशङ्कितः terrified, जनस्थानम् Janasthana, आजगाम came.
On hearing the jackal's howl, Rama began thinking how the demon in the form of a deer drew him away. Thus in the midst of apprehensions he reached Janasthana.