ذِكْرُ الْإِخْبَارِ عَنِ الْحَالَةِ الَّتِي مِنْ أَجْلِهَا أَنْزَلَ اللَّهُ جَلَّ وَعَلَا: {لَا إِكْرَاهَ فِي الدِّينِ}
[Machine] The woman from the Ansar used to barely have a son to live for. She would vow that if she had a son who survived, she would make him Jewish. But when the Banu Nadir were expelled, among them were some people from the sons of the Ansar. So the Ansar said, "O Messenger of Allah, these are our children." So Allah revealed this verse, "There is no compulsion in religion." Sa'id bin Jubayr said, "So whoever wanted to join them could do so, and whoever wanted to enter Islam could do so."
فِي قَوْلِهِ {لَا إِكْرَاهَ فِي الدِّينِ} قَالَ كَانَتَ الْمَرْأَةُ مِنَ الْأَنْصَارِ لَا يَكَادُ يَعِيشُ لَهَا وَلَدٌ فَتَحْلِفُ لَئِنْ عَاشَ لَهَا وَلَدٌ لَتُهَوِّدَنَّهُ فَلَمَّا أُجْلِيَتْ بَنُو النَّضِيرِ إِذَا فِيهِمْ نَاسٌ مِنْ أَبْنَاءِ الْأَنْصَارِ فَقَالَتِ الْأَنْصَارُ يَا رَسُولَ اللَّهِ أَبْنَاؤُنَا فَأَنْزَلَ اللَّهُ هَذِهِ الْآيَةَ «{لَا إِكْرَاهَ فِي الدِّينِ} » قَالَ سَعِيدُ بْنُ جُبَيْرٍ فَمَنْ شَاءَ لَحِقَ بِهِمْ وَمَنْ شَاءَ دَخَلَ فِي الْإِسْلَامِ