1. It strengthens the bonds of love between the rich and the poor, for it is from human nature that a person shows affinity to those who treat them well.
2. It purifies and cleanses the soul and distances it from greed and avarice, as indicated in the Noble Qur`aan when Allah SWT says:
“Take Sadaqah (alms) from their wealth in order to purify them and sanctify them with it.”
[Surah at-Tawbah (9):103]
3. It causes Muslims to grow accustomed to performing acts of generosity, hospitality and empathy towards those who are in need.
4. It brings increase and blessings to one’s wealth, and Allah replaces it (the wealth given as charity with something better), as Allah (SWT) said:
“And whatsoever you spend of anything (in Allah’s Cause), He will replace it. And He is the Best of providers.”
[Surah as‐Saba´ (34):39]
In a Saheeh (authentic) hadeeth, the Prophet saws said:
“O child of Adam! Spend in charity and We (Allah) will spend on you.”
(Narrated by as-Suyuti in ‘Al-Jaami’ as-Sagheer’. Declared saheeh by Al-Albani.)
– Also in Fatwa no. 43609 in islamqa.com,
With regard to the reason behind the prescription of zakaah, the scholars have mentioned many reasons for it, including the following:
1 – To complete and perfect a person’s Islam, because it is one of the pillars of Islam. If a person fulfils it, his Islam is complete.
2 – It is indicative of a person’s sincerity of faith, because wealth is dear to people, and something that is loved will not be given up except for something that is equally or more loved, or rather for something that is more loved.
3 – It cleanses the character of the one who gives it, so that he is saved from being a miser and is included among the generous.
4 – It gladdens the heart. If a person gives something, especially wealth, he feels a sense of joy.
5 – It joins a person to the ranks of the true believers. “None of you truly believes until he loves for his brother what he loves for himself.”
6 – It is one of the means of entering Paradise, because Paradise is for the one who “speaks good words, spreads (the greeting of) salaam, feeds the hungry and prays at night when the people are asleep.”
7 – It makes the Muslim society like a single family.
8 – It extinguishes the flames of revolution among the poor.
9 – It prevents financial crimes.
10 – Salvation from the heat of the Day of Resurrection. The Prophet (peace and blessings of Allaah be upon him) said: “Every man will be in the shade of his charity on the Day of Resurrection.” Classed as saheeh by al-Albaani in Saheeh al-Jaami’ (4510). And he listed among those whom Allaah will shade with His shade on the Day when there will be no shade but His: “… a man who gives charity and conceals it so much that his left hand does not know what his right hand is doing.” Agreed upon.
11 – It leads a man to learn about the laws of Allaah, because he can never pay his zakaah until he has learned the rulings on zakaah, the kinds of wealth that are subject to zakaah and those who are entitled to receive it, and other information that he needs.
12 – It purifies wealth, so that the wealth will grow literally and metaphorically. If a person gives charity from his wealth, that this will protect him from problems, and Allaah may increase his provision because of his giving charity. Hence it says in the hadeeth: “Wealth never decreases because of charity.” Narrated by Muslim, 2588.
13 – It is a means of bringing down blessings. In the hadeeth it says: “No people ever withhold the zakaah of their wealth but rain is withheld from the sky.”
14 – “Charity given in secret extinguishes the wrath of the Lord,” as was narrated from the Messenger (peace and blessings of Allaah be upon him) and classed as saheeh by al-Albaani in Saheeh al-Jaami’, 3759.
15 – It wards off a bad death.
16 – It wrestles with the calamity that comes down from heaven and prevents it reaching earth.
17 – It expiates for sins. The Messenger (peace and blessings of Allaah be upon him) said: “Charity extinguishes sins as water extinguishes fire.” Classed as saheeh by al-Albaani in Saheeh al-Jaami’, 5136.
- Zakaat Time : a Reminder for Those Who Fail to Pay Zakaat on Their Wealth. (mohammedirfan.wordpress.com)