Sahih Muslim 1021 c

The Prophet (ﷺ) said, "The example of a miser and the one who gives in charity, is like the example of two men wearing iron cloaks so tightly that their arms are raised forcibly towards their collar-bones. So, whenever a charitable person wants to give in charity, his cloak spreads over his body so much so that it wipes out his traces, but whenever the miser wants to give in charity, the rings (of the iron cloak) come closer to each other and press over his body, and his hands gets connected to his collarbones. Abu Huraira heard the Prophet (ﷺ) saying. "The miser then tries to widen it but in vain."

"The Messenger of Allah said: "The parable of the one who spends and give in charity, and the one who is miserly, is that of two men wearing coats of mail, with their hands pressed closely to their breasts and their collarbones. When the one who spends wants to give charity, the (coat of mail) expends so much that it covers his fingertips and obliterates his traces. But when the miser wants to give, the (coat of mail) contracts and every ring grips the place where it is, and his hands are tied up to his collarbone."' Abu Hurairah says: 'I swear that he saw the Messenger trying to expand it but it did not." Tawus said: "I heard Abu Hurairah said: "I heard Abu Hurairah illustrating with his hand trying to expand it but it did not." (Sahaih)

"The parable of the miser and the one who gives in charity is that of two men wearing coats of mail with their hands tied to their collarbones. Every time the one who gives thinks of giving in charity, the (coat of mail) expands until it obliterates his traces, and every time the miser thinks of giving charity, every circle (of the coat of mail) contracts and sticks to him, and his hand is tied up to his collarbones." I heard the Messenger of Allah say: "He tries to expand it, but he cannot."

I heard Messenger of Allah (ﷺ) saying: "The case of a miserly man and a generous man who gives in charity is similar to that of two persons who are clad in armour from their breasts up to their collar bones. When the generous man gives in charity, his armour expands so much as to cover his fingertips and toes. When the miser intends to spend something the armour contracts and every ring of it sticks to the place where it is (sinks into his flesh). He tries to loosen it but it does not expand." <b>[Al-Bukhari and Muslim]</b>.