Valmiki Ramayana Kishkindha Kanda Sarga 30 Shloka 18

मानववंशनाथ O lord of the human race, त्वया by you, सनाथा protected , जानकी Janaki, परेण by any one, सुलभा easy to obtain, न not, वीर hero, वरार्ह best, ज्वलिताम् blazing, अग्निचूडाम् burning fire, उपेत्य after reaching, कच्छित् any one, न दह्यते (इति) न is not burnt.

'O lord of the human race O worthy hero when you are the protector, Janaki cannot be retained by any one easily just as burning fire after it reaches its full height cannot be retained by any one.'