Al-Ma'idah 5:106 يا ايها الذين امنوا شهادة بينكم اذا حضر احدكم الموت حين الوصية اثنان ذوا عدل منكم او اخران من غيركم ان انتم ضربتم في الارض فاصابتكم مصيبة الموت تحبسونهما من بعد الصلاة فيقسمان بالله ان ارتبتم لا نشتري به ثمنا ولو كان ذا قربى ولا نكتم شهادة الله انا اذا لمن الاثمين ١٠٦

O you who believe! When death approaches any of you, and you make a bequest, (then take) the testimony of two just men of your own folk or two others from outside, while you are travelling through the land and death befalls on you. Detain them both after As-Salât (the prayer), (then) if you are in doubt (about their truthfulness), let them both swear by Allâh (saying): "We wish not for any worldly gain in this, even though he (the beneficiary) be our near relative. We shall not hide Testimony of Allâh, for then indeed we should be of the sinful."