Allamah Hilli relates in some of his books that the Holy Prophet (S.A.W.W.) once passed by a Jew who was going to chop some wood. On seeing him, the Prophet said that the Jew would be bitten by a poisonous snake and die.

In the evening the companions saw the Jew and found it strange that he was still alive contrary to what the Prophet (s.a.w.w.) had predicted. So they questioned the Holy Prophet about his predictions. The Prophet (s.a.w.w.) asked for the Jew to be presented to him so that he could be questioned.

When the Jew came, the Prophet asked him to open the bundle of chopped wood, and out popped a snake. The Holy Prophet (s.a.w.w.) asked the Jew what act he had done on that day.

In reply the Jew answered that he had not done anything in particular except that as he was eating some food a beggar asked him for some of it, so he gave one of the two cakes he had without any hesitation to the beggar.

The Prophet then said that the Jew had been destined to die but for the charity he had given which removes seventy evils. The Jew accepted Islam.

Indeed charity increases your good deeds and your life. (AL MUSTADRAK, AL BIHAR VOL 4 PAGE 121)