Kabir das ki vaani

Chalti Chakki Dekh Kar, Diya Kabira Roye

Do Paatan Ke Beech Mein,Sabit Bacha Na Koye

Kabir Das compares the Universe to Grinding stone, between Earth and Sky, that is between duality, no human will survive whole, same way in any decision or matter, duality will not serve the purpose, on the whole it can be said, do with full devotion and concentration, don't ever be in duality. – Eklavya