[6:141] He is the One who established gardens, trellised and untrellised, and palm trees, and crops with different tastes, and olives, and pomegranate ―fruits that are similar, yet dissimilar. Eat from their fruits, and give the due alms on the day of harvest,* and do not waste anything. He does not love the wasters.
*6:141 Zakat charity is so important, the Most Merciful has restricted His mercy to those who givez` it (7:156). Yet, the corrupted Muslims have lost this most important commandment; they give Zakat only once a year. We see here that Zakat must be given away "On the day we receive income." The proportion that came to us through Abraham is 2.5% of our net income.