جزى
Jazā
To repay each person on the Day of Judgement: reward for a life of virtue, or punishment for a life of sin.
What it means
Jazā means to repay, and the noun jazāʾ is the recompense. In the Quran it is God’s requital on the Last Day, when each person is given his due according to what he did. “Whoever does an atom’s weight of good will see it, and whoever does an atom’s weight of evil will see it” (99:7–8). The reward for good is generous: “Whoever brings a good deed will have ten times its like, and whoever brings an evil deed will be repaid only its like” (6:160). The same root yields jazāk Allāh khayran, the phrase people use to thank one another. Faruqi’s definition shows that the word covers both reward and punishment, as a matter of justice.
Term and Arabic as listed in Ismail al Faruqi, Toward Islamic English (International Institute of Islamic Thought, 1995), p. 27, listed as JAZĀ. The definition is restated here.