Those who spend their wealth (in Allah’s cause) by night and day, in secret and in public, they shall have their reward with their Lord.
On them shall be no fear, nor shall they grieve.
(Qur’an 2, verse 274)

The Prophet Sallalahu Alaihi Wa Salam said “seven people will be shaded by Allah under His Shade on the Day (i.e the Day of Resurrection) when there will be no shade except His”.

Among the seven is A person who practices charity so secretly that his left hand does not know what his right hand has given.
(see Sahih Al-Bukhari, Vol.2, Hadith No.504)

The Prophet also said: “Give charity without delay, for it stands in the way of calamity.” – Al-Tirmidhi, Hadith 589
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The Prophet Sallalahu Alaihi Wa Salam said “Charity given in secret extinguishes the wrath of the Lord,”
( classed as saheeh by al-Albaani in Saheeh al-Jaami’, 3759).

Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said, “There is not a day upon which the servant awakens but that two angels descend. One of them says: O Allah, give repayment to one who spends in charity! The other says: O Allah, give destruction to one who withholds charity!”

Source: Ṣaḥīḥ al-Bukhārī 1374, Ṣaḥīḥ Muslim 1010

Grade: Muttafaqun Alayhi (authenticity agreed upon) according to Al-Bukhari and Muslim

Regarding Sadaqah

If the person giving Sadaqah knows that the money he is donating will reach Allah first and then the poor person, he will truly gain much more joy in giving rather than taking

Do you know the benefits of Sadaqah?
Pay particular attention to 17,18,19

So listen

1. Sadaqah is one of the doors from jannah
2. Sadaqah is the most virtuous action in all good actions, and the best form of Sadaqah is to feed others
3. Sadaqah will be a shade on the day of judgement and it will save a person from the fire
4. Sadaqah makes the anger of Allah cool and it also cools the heat in the grave
5. The best and most beneficial gift for a deceased person is Sadaqah and Allah continues to increase the reward of Sadaqah
6. Sadaqah is a way to purify the soul and increases good deeds
7. Sadaqah will be a cause of happiness on the day of judgment on the face of the giver
8. Sadaqah is a source of peace from the dangers of the day of judgement and it doesn’t let you grieve the past
9. Sadaqah is a means of sins being forgiven and also expiates past sins
10. Sadaqah is glad tidings of a good death and is also a cause for the duas of the angels
11. The person who gives sadaqah is from the best of people and all those associated with it will also recieve the reward
12. The person who gives Sadaqah is promised great rewards
13. The person who spends is counted in those who have piety and people also begin to love him
14. Giving Sadaqah is a sign of kindness and grace
15. Sadaqah is a means of duas being accepted and hardships being removed
16. Sadaqah removes difficulties and closed 70 doors of harm in the world
17. Sadaqah is a means of age and wealth being increased and is also a means of success and provision
18. Sadaqah is a cure and a medicine
19. Sadaqah prevents theft, a bad death, burns from fire and drowning
20. Sadaqah is rewarded, even if it is on animals and birds.