be substantive. If they agree to call nothing light or heavy except what fits that description, then the dispute is merely verbal. But the dispute over whether the heavenly bodies could rise and fall were Allah not holding them in place by His power is substantive. As He says:

“Indeed, Allah holds the heavens and the earth lest they move from their places.” [Fātir 41]

And He says:

“And among His signs is that the heaven and the earth stand by His command.” [al-Rūm 25]

It is established in Sahīh Muslim, in the hadith narrated by Kurayb from Ibn ʿAbbās, from Juwayriyah bint al-Hārith