"The Messenger of Allah ﷺ said: 'No slave truly believes until he believes in four things: in Allah alone with no partner; that I am the Messenger of Allah; in the resurrection after death; and in the Divine Decree (Qadar).'"
قَالَ رَسُولُ اللَّهِ ﷺ لاَ يُؤْمِنُ عَبْدٌ حَتَّى يُؤْمِنَ بِأَرْبَعٍ بِاللَّهِ وَحْدَهُ لاَ شَرِيكَ لَهُ وَأَنِّي رَسُولُ اللَّهِ وَبِالْبَعْثِ بَعْدَ الْمَوْتِ وَالْقَدَرِ