Narrated 'Amr bin Dinar:

from a man among the children of Umm Salamah, from Umm Salamah that she said: "O Messenger of Allah! I have not heard Allah mentioning anything about women and emigration." So Allah, Blessed and Most High, revealed: "Never will I allow to be lost the work of any of you, be he male or female. You are members one of another (3:195)."

حَدَّثَنَا ابْنُ أَبِي عُمَرَ، حَدَّثَنَا سُفْيَانُ، عَنْ عَمْرِو بْنِ دِينَارٍ، عَنْ رَجُلٍ، مِنْ وَلَدِ أُمِّ سَلَمَةَ عَنْ أُمِّ سَلَمَةَ، قَالَتْ يَا رَسُولَ اللَّهِ لاَ أَسْمَعُ اللَّهَ ذَكَرَ النِّسَاءَ فِي الْهِجْرَةِ . فَأَنْزَلَ اللَّهُ تَعَالَى : ( إِنِّي لاَ أُضِيعُ عَمَلَ عَامِلٍ مِنْكُمْ مِنْ ذَكَرٍ أَوْ أُنْثَى بَعْضُكُمْ مِنْ بَعْضٍ ) .