Apart from this...

Apart from this, the person must know what has been said about Yazid, and about his personal and moral abilities with which history is abound from his day to this day of ours, and which had obvious results during his authority. We do not want to write in detail about Yazid. However, we want to draw the attention of the gentle reader to the great error which Mu'awiya made, and through which he took the reins of the Islamic authority and violated all Islamic rules freely.