Amr bin Yahya bin 'Ammara عمرو بن يحيى بن عمارة · The Book of Zakah

"I come to the Prophet while he was sitting in the shade of the Ka'bah. When he saw me coming he said: 'They are the losers, by the Lord of the Ka'bah!' I said: 'what's happening? Perhaps something has been revealed concerning me.' I said: 'Who are they, may my father said mother be ransomed for you?' He said: "those who have a lot of wealth, except one who does like this, and like this, and like this,' (motioning) in…

"The Messenger of Allah said: 'There is no man who has wealth and does not pay the dues of his wealth, but a baldheaded Shuja'a will be made to encircle his neck, and he will run away from the Book of Allah: 'And let not those who covetously withhold of that which Allah has bestowed on them of His Bounty (wealth)' think that it is good for them (and so they do not pay the obligatory Zakah). Nay, it will…

"The Messenger of Allah said: 'A Muslim man does not have to pay Zakah on his slave or his horse."'

a woman from among the people of Yemen came to the Messenger of Allah with a daughter of hers, and on the daughter's hand were two thick bangles of gold. He said: "Do you pay Zakah on these? She said: "No." He said: "Would it please you if Allah were to put two bangles of fire on you on the Day of Resurrection? " So she took them of and gave them to the Messenger of Allah and said: "They…

"If Allah gives a person wealth and he does not pay Zakah on it, his wealth will appear to him on the Day of Resurrection as a bald-heated Shuja'a with two dots above its eyes. It will take hold of the corners of his mouth on the Day of Resurrection and will say: 'I am your wealth, I am your hoarded treasure.' The he recited this verse: 'And let not those who covetously withhold of that which Allah has bestowed…