5:106 Believers, if you are traveling in the land and the affliction of death befalls you, at the bequeathing testimony shall be two just men from among you, or two others from other than you. You shall detain both after the prayer, and they shall swear by Allah if you are doubtful, 'We will not sell it for a price, even though it were a near kinsmen, nor will we hide the testimony of Allah, because then we would surely be among the sinful.'
5:107 But if it is discovered that both of them have been subject to sinning, then two others shall stand in their place, these being the nearest of those most concerned, and they shall swear by Allah, 'Our testimony is truer than their testimony, and we have not transgressed, because then we would surely be among the harm doers.'
5:108 So it is likelier that they will bear testimony in proper form, or else they will be afraid that oaths may be rejected after their oaths. Fear Allah, and listen; Allah does not guide the people of the evildoers.