he Prophet of Allah, sallallaahu ‘alayhi wa sallam, made them fearful of swearing by Allah while lying

“I was with the Messenger of Allah, sallallaahu ‘alayhi wa sallam, when two men approached who were disputing with regards to land. One of them said: ‘This man seized some of my land during the pre-Islamic era.’ The Prophet of Allah, sallallaahu ‘alayhi wa sallam, said: ‘What is your evidence?’ The man said: ‘I have none.’ The Messenger of Allah, sallallaahu ‘alayhi wa sallam, said: ‘Either that, or he will give an oath to confirm his claim [that the land is his and not yours].’ The man said: ‘If it is reliant on his oath, then he will take the land.’ The Messenger of Allah, sallallaahu ‘alayhi wa sallam, said: ‘That is your only choice.’When the man stood to give an oath, the Messenger of Allah, sallallaahu ‘alayhi wa sallam, said: ‘Whoever appropriates land unjustly will meet Allah while Allah is angry at him.

“A man from Kindah named Imru’ Al-Qays ibn `Aabis disputed with a man from Hadhramawt (in Yemen) and went to the Messenger of Allah, sallallaahu ‘alayhi wa sallam, with regards to some land. He, sallallaahu ‘alayhi wa sallam, ruled that the man from Hadhramawt should bring his evidence and for Imru’ Al-Qais to give an oath (swearing that the land is his). The man from Hadhramawt said: ‘If you give him the right and chance to give an oath, by Allah my land will be lost.’ At that, the Messenger of Allah, sallallaahu ‘alayhi wa sallam, said: ‘Whoever gives an oath and lies in that oath in order to appropriate the wealth of his brother will meet Allah while Allah is angry at him.’ Rajaa’ said: ‘Then, the Messenger of Allah, sallallaahu ‘alayhi wa sallam, recited the verse (which means), «Indeed, those who exchange the covenant of Allah and their [own] oaths for a small price will have no share in the Hereafter, and Allah will not speak to them or look at them on the Day of Resurrection, nor will He purify them; and they will have a painful punishment.»  said: ‘O Messenger of Allah, what is for the one who gives their right up?’ The Messenger of Allah, sallallaahu ‘alayhi wa sallam, responded: ‘Paradise.’ Imru’ Al-Qays said: ‘Then bear witness that I give it all up tohim.’”