Hadith 31-245

وَبِإِسْنادِهِ عَنْ عَلِيِ‏ عَلَيْهِ السَّلامُ قالَ: قالَ النَّبِي‏ صَلَّى اللهُ عَلَيْهِ وَآلِهِ: خَيْرُ مالِ المَرْءِ وَذَخائِرِه الصَّدَقَة.

According to the same documentation, on the authority of Ali (a.s.), the Prophet (S) said, “The best wealth and treasure of a man is his charity.”