Valmiki Ramayana Ayodhya Kanda Sarga 64 Shloka 68

अप्रतिकर्मणः of unparalleled deeds, तस्य सुतस्य that son's, अदर्शनजः born out of nonappearance, शोकः grief, स्तोकम् small quantity, वारि water, आतपः इव like heat, मे my, प्राणान् life, उच्छोषयति is drying up.

My grief in the absence of Rama of peerless deeds is drying up my life as heat dries up small pools of water.