The Arabic `ZARREH' translated to atom, primarily means an ant, and it is applied to anything little or small, and now a days, it is referred to the atom. The verse implies that God will never oppress any one the weight of an atom or the least, and on the contrary, if He find a good deed, He may double or multiply it by His Grace and Mercy, and even a greater reward may come out of His love, which depends somehow to our intention and purity of faith and sincerity in ours acts.