61:11 "That you acknowledge God and His messenger and strive in the cause of God with your money and your lives. This is best for you, if only you knew."
Edip-Layth (Quran: A Reformist Translation)
Dictionaries
Ejtaal Arabic Almanac: Lane's Lexicon, Hans Wehr, Lisan al-Arab and others
But as for those who are bent on denying the truth, their [good] deeds are like a mirage in the desert, which the thirsty supposes to be water until, when he approaches it, he finds that it was nothing:* instead, he finds [that] God [has always been present] with him, and [that] He will pay him his account in full - for God is swift in reckoning!