Imam ‘Ali (a.s.) said:
مَنْ يَكْسِبُ مِنْ غَيْرِ حَقِّهِ يَصْرِفُهُ فِي غَيْرِ أَجْرِهِ
He who acquires wealth illegitimately, will spend it in ways which confer no divine reward.1
It is a common belief that some types of properties are unsuitable for spending on public welfare or charity. The above tradition is a good proof for this public belief. And one can verify it because one can see cases where some individuals have intended to participate in a good cause using their property, but they have either stopped half way or their project, though completed, is not effective or even counter-productive. On the other hand one finds a lot of faithful and virtuous individuals who have accomplished a lot of good work with their meager resources.