Valmiki Ramayana Aranya Kanda Sarga 51 Shloka 26
Original Shlokaअनुबन्धमजानन्तः कर्मणामविचक्षणाः।।3.51.26।। शीघ्रमेव विनश्यन्ति यथा त्वं विनशिष्यसि।
1 source checked for this shloka
कर्मणाम् of the deeds, अनुबन्धम् consequences, अजानन्तः not knowing, अविचक्षणाः unwise, यथा similarly, श्रीघ्रमेव soon, विनश्यन्ति get destroyed, त्वम् you, विनशिष्यसि will be destroyed.
Fools who do not know the consequences of their action perish soon. Similarly you are going to die soon.