“The likeness of those who spend their wealth in the way of Allah, is as the likeness of a grain (of corn); it grows seven ears, and each ear has a hundred grains. Allah gives manifold increase to whom He wills. And Allah is All-Sufficient for His creatures’ needs, All-Knower.
Those who spend their wealth in the Cause of Allah, and do not follow up their gifts with reminders of their generosity or with injury, their reward is with their Lord. On them shall be no fear, nor shall they grieve” [al-Baqarah 2:261-262]
ٱلَّذِينَ يُنفِقُونَ أَمۡوَٲلَهُم بِٱلَّيۡلِ وَٱلنَّهَارِ سِرًّ۬ا وَعَلَانِيَةً۬ فَلَهُمۡ أَجۡرُهُمۡ عِندَ رَبِّهِمۡ وَلَا خَوۡفٌ عَلَيۡهِمۡ وَلَا هُمۡ يَحۡزَنُونَ
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
“Your smile for your brother is a charity. Your removal of stones, thorns or bones from the paths of people is a charity. Your guidance of a person who is lost is a charity.” (Bukhari)
It was narrated from Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said:
“Allah said: ‘Spend, O son of Adam, and I shall spend on you.’”
Narrated by al-Bukhaari, 5073; Muslim, 993.