Al-Hadid 57:8

Wama lakum la tu/minoona billahiwarrasoolu yadAAookum litu/minoo birabbikum waqad akhathameethaqakum in kuntum mu/mineen

And why do you not believe in Allāh while the Messenger invites you to believe in your Lord and He has taken your covenant, if you should [truly] be believers?

What is wrong with you that you do not believe in Allah, while the Messenger invites you to believe in your Lord, and He has taken your covenant, if you are to believe?