Valmiki Ramayana Aranya Kanda Sarga 55 Shloka 24

महाजवः of high speed, वायुः wind, आकाशे in the sky, पाशैः by rope, बध्धुम् to bind, न शक्यः not possible, दीप्यमानस्य of burning flame, आग्नेः fire, विमलाम् brilliant , शिखाम् flame, गृहीतुम् to catch.

It is not possible to bind the wind blowing at high speed in the sky. Similarly it is not possible to catch the brilliant glow of flaming fire.