Anas ibn Malik · The Book of Zakah

"I heard the Messenger of Allah say: 'Any man who has camels and does not pay what is due on them in its Najdah or its Risl mean?' He said: 'In times of hardship or in times of ease; they will come on the Day of Resurrection as energetic, fat and lively as they ever were. He will be laid face down in a flat arena for them and they will trample him with their hooves. When the last of…

That the Messenger of Allah sent him to Yemen, and he commanded him to take a Dinar, or its equivalent in Maafr, from each person who had reached the age of puberty. And with regard to cattle, from every thirty a male or female Tabi '(two-year-old). And from every forty a Musinnah (three-year-old). (Daif)

"I heard that you do some jobs for the people but when payment is given to you, you refuse it." I said: "(that is so)." 'Umar, may Allah be pleased with him, said: "Why do you do that? I said: "I have horses and slaves and am well off, and I wanted my work to be an act of charity toward the Muslims." 'Umar said to him: "Do not do that. I used to want the same thing as you.…