on seeing the confederate tribes the believers said this is what god and his messenger had promised us. the promise of god and his messenger is true. this only strengthens their faith and their desire of submission to the will of god.
ولما رأى المؤمنون الأحزاب قالوا هذا ما وعدنا الله ورسوله وصدق الله ورسوله وما زادهم إلا إيمانا وتسليما