The Prophet (ﷺ) said, "The neighbor has more right to be taken care of by his neighbor (than anyone else)." Some men said, "If one wants to buy a house for 20,000 Dirhams then there is no harm to play a trick to deprive somebody of preemption by buying it (just on paper) with 20,000 Dirhams but paying to the seller only 9,999 Dirhams in cash and then agree with the seller to pay only one Dinar in cash for…