24:9An-Noor

"When the Prophet commanded the two who were engaging in Li'an to utter the fifth oath, he commanded a man to place his hand over his mouth, and he said: "It will inevitably bring the punishment upon the liar.""

He who took an oath in order to entitle himself (to the possession) of a property, whereas he is a liar, would meet Allah in a state that He would be very much angry with him. Then the remaining part of the hadith was narrated as transmitted by A'mash but with the exception of these words: There was a dispute between me and another person in regard to a well. We referred this dispute to the Messenger of Allah (ﷺ). Upon this he remarked: Either (you should produce) two witnesses (to support your contention) or his oath (would be accepted as valid).

When the Prophet (ﷺ) ordered a man and his wife to invoke curses on each other, he ordered a man to put his hand on his mouth when he came to the fifth utterance, saying that it would be the deciding one.

“Whoever swears a false oath in order to seize the wealth of a Muslim unlawfully, he will meet Allah when He is angry with him.”

He who perjured with a view to appropriating the property of a Muslim, and he is in fact a liar and would meet Allah in a state that He would be angry with him. He (the narrator) said: There came Ash'ath b. Qais and said (to the people): What does Abu Abdur-Rahman (the Kunya of Abdullah b. Umar) narrate to you? They replied: So and so. Upon this he remarked: Abu Abdur-Rahman told the truth. This (command) has been revealed in my case. There was a piece of land in Yemen over which I and another person had a claim. I brought the dispute with him to the Messenger of Allah (to decide) He (the Holy Prophet) said: Can you produce an evidence (in your support)? I said: No. He (the Holy Prophet) observed: (Then the decision would be made) on his oath. I said: He would readily take an oath. Upon this the Messenger of Allah (ﷺ) remarked: He who perjured for appropriating the wealth of a Muslim, whereas he is a liar, would meet Allah while He would be angry with him. This verse was then revealed:" Verily those who barter Allah's covenant and their oaths at a small price..." (iii 77).