﴿ يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ لَا تُبْطِلُوا۟ صَدَقَٰتِكُم بِٱلْمَنِّ وَٱلْأَذَىٰ كَٱلَّذِى يُنفِقُ مَالَهُۥ رِئَآءَ ٱلنَّاسِ وَلَا يُؤْمِنُ بِٱللَّهِ وَٱلْيَوْمِ ٱلْءَاخِرِ ۖ فَمَثَلُهُۥ كَمَثَلِ صَفْوَانٍ عَلَيْهِ تُرَابٌۭ فَأَصَابَهُۥ وَابِلٌۭ فَتَرَكَهُۥ صَلْدًۭا ۖ لَّا يَقْدِرُونَ عَلَىٰ شَىْءٍۢ مِّمَّا كَسَبُوا۟ ۗ وَٱللَّهُ لَا يَهْدِى ٱلْقَوْمَ ٱلْكَٰفِرِينَ ﴾

“O you who have attained to faith! Do not deprive your charitable deeds of all worth by stressing your own benevolence and hurting [the feelings of the needy], as does he who spends his wealth only to be seen and praised by men, and believes not in God and the Last Day: for his parable is that of a smooth rock with [a little] earth upon it - and then a rainstorm smites it and leaves it hard and bare. Such as these shall have no gain whatever from all their [good] works: for God does not guide people who refuse to acknowledge the truth.”

Some soil (earth) may collect on the surface of a boulder. Outwardly, it appears as though this is good, fertile soil, but when a gust of wind brings a rain-shower down upon it, then the earth is washed away, leaving the rock exposed to the elements. The same is true of one who has donned a superficial robe of piety, without that piety having permeated his entire being. Should he be addressed rudely by someone asking for financial help, or should his ego receive a wounding blow, he becomes so irritated that he exceeds all bounds of decency in his response. Incidents of this nature are like the showers of rain which wash away his outward garb of piety, leaving his true nature exposed to the outside world. To do things for God’s sake, is to give priority to the invisible over the visible world. It is to set one’s sights on an unseen world, over and above the world which meets the eye. This requires a loftiness of vision. Those who show such sublimity of vision have the door of God’s realization opened to them.