Surah Al-Hadid, Verse 8

وَمَا لَكُمۡ لَا تُؤۡمِنُونَ بِٱللَّهِ وَٱلرَّسُولُ يَدۡعُوكُمۡ لِتُؤۡمِنُواْ بِرَبِّكُمۡ وَقَدۡ أَخَذَ مِيثَٰقَكُمۡ إِن كُنتُم مُّؤۡمِنِينَ٨

wamā lakum lā tu'minūna bil-lahi wal-rasūlu yadʿūkum litu'minū birabbikum waqad akhadha mīthāqakum in kuntum mu'minīna

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?