Sayyiduna Abu Hurayrah (may Allah be pleased with him) said that the Prophet (peace and blessings be upon him) said: "There are seven whom Allah Almighty will shade in His shade on the Day when there is no shade but His shade: a just ruler; a person who grew up in the worship of Allah; a person whose heart is attached to the mosques; two people who love one another only for the sake of Allah, coming together on that basis and parting on that basis; a man who is called by a woman of rank and beauty, and he says: 'I fear Allah'; a man who gives charity secretly, so much so that even his right hand does not know what his left hand has spent; and a person who remembers Allah in solitude and his eyes overflow with tears."
Imam Muslim (may Allah have mercy on him) narrated via Zuhayr bin Harb from Yahya al-Qattan that Ubaydullah said: "His right hand does not know what his left hand spent."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الزكاة / 7836
It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that he (peace and blessings be upon him) said: "And a man who gives charity secretly, so much so that even his left hand does not know what his right hand has spent."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الزكاة / 7837