The Prophet ﷺ said, "Every act of kindness is charity."
عن النبي ﷺ قال: كل معروف صدقة.
No references are available.
Bukhari narrated it in al-Adab (6021) from Ali bin Ayyash, who said, Abu Ghassan narrated to us, who said, Muhammad bin Munkadir narrated to me, from Jabir bin Abdullah, and he related it.