Valmiki Ramayana Yuddha Kanda Sarga 50 Shloka 52
Original Shlokaमोक्षितौचमहाघोरादस्मात्सायकबन्धनात् । अप्रमादश्चकर्तव्योयुवाभ्यांनित्यमेवच ।।6.50.52।।
1 source checked for this shloka
महाघोरात् frightful, अस्मात् to you, सायकबन्धनात् from the bondage of snakes, मोक्षितौच and to relieve, युवाभ्याम् both of you, नित्यमेवच guilelessness, अप्रमादः inattentive, कर्तव्यः your duty.
"Considering it as my duty to relieve you both from the frightful bondage of snakes I reached. Do not be inattentive and guileless."