Sultan Behâeddin Veled [k.s] tells:
One day we were going to the vineyard of Hüsâmeddin Çelebi with my father. My father put me on a mule. He was on foot with other students.
I was right behind my father. At one point, I saw that my father Mevlânâ's blessed body covered a light with the permission of Allah. He radiated around like a sun. I immediately thought of those who denied my father's greatness.
While thinking, "I'm surprised at them, why do they think badly?" my father turned back and said:

O Beheddin! Leave those who deny your father and bring your own ego. Do not get arrogance. You're on the animal while everyone is walking. So few height of the heart leads man to arrogance, self-appreciation,
and he falls into the hands of his ego and devil. And It commanded them to serve.