The weight of a mustard seed

وَنَضَعُ الْمَوَازِينَ الْقِسْطَ لِيَوْمِ الْقِيَامَةِ فَلَا تُظْلَمُ نَفْسٌ شَيْئًا ۖ 

وَإِنْ كَانَ مِثْقَالَ حَبَّةٍ مِنْ خَرْدَلٍ أَتَيْنَا بِهَا ۗ وَكَفَىٰ بِنَا حَاسِبِينَ

We shall set up scales of justice for the Day of Judgment, so that not a soul will be dealt with unjustly in the least, and if there be (no more than) the weight of a mustard seed, We will bring it (to account): and enough are We to take account.

حين يسألونك عن المحظوظ ؟؟

قل ذاك الذي مسته من الله رحمة 

فأصابت قلبه فأحيته

We bestow of our Mercy on whom We please, and We suffer not, to be lost, the reward of 

those who do good.