It is believed that Rumi heard the dhikr, "la ilaha ilallah" or in English, "no god but Allah" in the apprentices beating of the gold, and was so entranced in bliss he stretched out both of his arms and started spinning in a circle. With that the practice of Sama and the dervishes of the Mevlevi order were born.
Rumi is believed to have been profoundly impacted by the dhikr "la ilaha ilallah" or "no god but Allah" as he listened to the sound of gold being hammered, causing him to become completely absorbed in ecstasy and spin around with his arms outstretched. This experience gave birth to the Sama practice and the Mevlevi dervishes.