Ata' bin Abi Rabah عطاء بن أبي رباح · The Chapters Regarding Zakat

the Messenger of Allah said: “There is no one who does not pay Zakat on his wealth but a bald headed snake will be made to appear to him on the Day of Resurrection, until it encircles his neck.” Then the messenger of Allah recited the following Verse from the Book of Allah the Most High: “And let not those who covetously withhold of that which Allah had bestowed on them of His Bounty(wealth) think that is good for them”

Thawban said: “The Messenger of Allah said: 'Who will commit himself to one thing, I will guarantee him paradise?' I said: 'I will.' He said: 'Do not ask people for anything.' So Thawban would drop his whip while he was on his mount, and he would not say to anyone: 'Get that for me' rather he would dismount and grab it.”