Al-Ma'idah 5:106

يَـٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُواْ شَهَٰدَةُ بَيۡنِكُمۡ إِذَا حَضَرَ أَحَدَكُمُ ٱلۡمَوۡتُ حِينَ ٱلۡوَصِيَّةِ ٱثۡنَانِ ذَوَا عَدۡلٖ مِّنكُمۡ أَوۡ ءَاخَرَانِ مِنۡ غَيۡرِكُمۡ إِنۡ أَنتُمۡ ضَرَبۡتُمۡ فِي ٱلۡأَرۡضِ فَأَصَٰبَتۡكُم مُّصِيبَةُ ٱلۡمَوۡتِۚ تَحۡبِسُونَهُمَا مِنۢ بَعۡدِ ٱلصَّلَوٰةِ فَيُقۡسِمَانِ بِٱللَّهِ إِنِ ٱرۡتَبۡتُمۡ لَا نَشۡتَرِي بِهِۦ ثَمَنٗا وَلَوۡ كَانَ ذَا قُرۡبَىٰ وَلَا نَكۡتُمُ شَهَٰدَةَ ٱللَّهِ إِنَّآ إِذٗا لَّمِنَ ٱلۡأٓثِمِينَ 106

O you who have believed, testimony [should be taken] among you when death approaches one of you at the time of bequest - [that of] two just men from among you or two others from outside if you are traveling through the land and the disaster of death should strike you. Detain them after the prayer and let them both swear by Allah if you doubt [their testimony, saying], "We will not exchange our oath for a price, even if he should be a near relative, and we will not withhold the testimony of Allah. Indeed, we would then be of the sinful