Valmiki Ramayana Kishkindha Kanda Sarga 28 Shloka 59

मम my, शोकश्च sorrow, विस्तीर्णः great, वर्षाश्च these rains, भृशदुर्गमाः difficult to cross, रावणश्च Ravana also, महान् great, शत्रुः enemy, मे me, अपारम् to cross over, प्रतिभाति it appears.

'My sorrow which increases, the rains which make it hard to cover distances and Ravana the great enemyall these appear difficult to conquer.