On receipt of this letter Mu'awiyah sent for Abu Dharr and...

On receipt of this letter Mu'awiyah sent for Abu Dharr and made him ride on the bare back of a mischievous camel with a cruel rider. He told the rider to keep the camel running day and night and not to let him stop at any place till he reaches Medina. Abu Dharr was tall and lean and by that time had become so old that all the hair of his head…