That is because their deeds did not agree with the simplest...

That is because their deeds did not agree with the simplest rules of the Islamic religion. In other words, they went too far in practicing prostitution, amusement, and impudence. Moreover, their palaces became theaters for amusement, dance, and corruption. Thus, the poet said concerning al-Mahdi, the ‘Abbasid Caliph, : Banu Umayya (the sons of Umayya), wake up, for your sleep has become long. Indeed the Caliph is Ya‘qub b. Dauwd. O People, your caliphate has become lost.

Look for Allah's caliph between the flute and the lute. The desire controlled the Caliph. Thus, he was between the flute and the lute. So,…