For, Believers are those who, when Allah is mentioned, feel a tremor in their hearts; and when they hear His signs rehearsed, find their faith strengthened, and put (all) their trust in their Lord. Who establish regular prayers and spend (freely) out of the gifts We have given them for sustenance. Such in truth are the believers; they have grades of dignity with their Lord, and forgiveness, and generous sustenance.
—Surah Al-Anfal : 2-4
