and then affirm those consequences, failing to recognize that the supposition itself is impossible. An impossible supposition may entail impossible consequences, as in the words of Allah Most High:

“Had there been in the heavens and the earth gods other than Allah, both would have fallen into ruin.”
[al-Anbiyā’: 22]

There are examples of this, including what the Qadariyyah and Jabriyyah say concerning human actions: are they within the power of both the Lord and the servant, or not?

The majority of the Mu'tazilites said that the Lord has no power over the very act that lies within the servant’s power. They differed as to whether He has power over an act like it. The Basrans, such as Abū Hāshim, affirmed this, while al-Ka'bī and his Baghdadi followers denied it.