Appears 5 times in the Quran. (Root: نفق)
  1. O you who believe! do not make your charity worthless by reproach and injury, like him who spends his property to be seen of men and does not believe in Allah and the last day; so his parable is as the parable of a smooth rock with earth upon it, then a heavy rain falls upon it, so it leaves it bare; they shall not be able to gain anything of what they have earned; and Allah does not guide the unbelieving people.

  2. And the Jews say: The hand of Allah is tied up! Their hands shall be shackled and they shall be cursed for what they say. Nay, both His hands are spread out, He expends as He pleases; and what has been revealed to you from your Lord will certainly make many of them increase in inordinacy and unbelief; and We have put enmity and hatred among them till the day of resurrection; whenever they kindle a fire for war Allah puts it out, and they strive to make mischief in the land; and Allah does not love the mischief-makers.

  3. And of the dwellers of the desert are those who take what they spend to be a fine, and they wait (the befalling of) calamities to you; on them (will be) the evil calamity; and Allah is Hearing, Knowing.

  4. And of the dwellers of the desert are those who believe in Allah and the latter day and take what they spend to be (means of) the nearness of Allah and the Messenger's prayers; surely it shall be means of nearness for them; Allah will make them enter into His mercy; surely Allah is Forgiving, Merciful.

  5. Allah sets forth a parable: (consider) a slave, the property of another, (who) has no power over anything, and one whom We have granted from Ourselves a goodly sustenance so he spends from it secretly and openly; are the two alike? (All) praise is due to Allah! Nay, most of them do not know.