2.”The only believers are those whose hearts tremble when God is mentioned, and who are increased in faith when the signs of God are recited to them, and who trust in their Lord;
3. those who pray regularly, and give of what We have provided them.
4. They are the ones who are truly believers; there are ranks in the presence of their Lord for them and forgiveness, and a generous provision;”
(The Quran, A New Translation, 8:2-4)