The Prophet (ﷺ) said: One should not take a false oath at this pulpit of mine even on a green tooth-stick; otherwise he will make his abode in Hell, or Hell will be certain for him.
Sunan Abi Dawud Book 22, Hadith 5
← Previous Hadith On the Authority of his father: A man from Hadramawt and a man of Kindah came to the Messenger of Allah (ﷺ). Al-Hadrami said: Messenger of Allah, this (man) took away forcibly from me the land which belongs to my father. Al-Kindi said: It is my land in my possession, and I cultivate it, he has no right to it. The Prophet (ﷺ) then said to al-Hadrami: Have you any proof ? He said: No. He then said: So for you is his oath. He said: Messenger of Allah, he is liar, he does not care for which he is taking the oath. He does not refrain himself from anything. The Prophet (ﷺ) said: You will have nothing from him except that. He went to take an oath for him. When he turned his back, the Messenger of Allah (ﷺ) said: If he takes an oath on the property to take it away by unfair means, he will meet Allah while He is unmindful of him.

Sunan Abi Dawud Book 22, Hadith 4 Next Hadith → The Messenger of Allah (ﷺ) as saying: If anyone swears on oath is the course which he says: "By al-Lat" he should say: There is no god but Allah, and that if anyone says to his friend: Come and let me play for money with you, he should give something in charity (sadaqah).

Sunan Abi Dawud Book 22, Hadith 6