«إِذَا سَكَنَ إِخْوَةٌ مَعًا وَمَاتَ وَاحِدٌ مِنْهُمْ وَلَيْسَ لَهُ ابْنٌ، فَلاَ تَصِرِ امْرَأَةُ الْمَيْتِ إِلَى خَارِجٍ لِرَجُل أَجْنَبِيٍّ. أَخُو زَوْجِهَا يَدْخُلُ عَلَيْهَا وَيَتَّخِذُهَا لِنَفْسِهِ زَوْجَةً، وَيَقُومُ لَهَا بِوَاجِبِ أَخِي الزَّوْجِ.
If brethren dwell together, and one of them die, and have no child, the wife of the dead shall not marry without unto a stranger: her husband's brother shall go in unto her, and take her to him to wife, and perform the duty of an husband's brother unto her.