Sahih Muslim 2633
Abu Sa'id Khudri reported that a woman came to Allah's Messenger (ﷺ) and said:
Allah's Messenger, men receive your instructions; kindly allocate at your convenience a day for us also, on which we would come to you and you would teach us what Allah has taught you. He said: You assemble on such and such a day. They assembled and Allah's Messenger (ﷺ) came to them and taught them what Allah had taught him and he then said: No woman amongst you who sends her three children as her forerunners (in the Hereafter) but they would serve him as a protection against Hell-Fire. A woman said: What about two and two and two? Thereupon Allah's Messenger (ﷺ) said: Even if they are two and two and two.
حَدَّثَنَا أَبُو كَامِلٍ الْجَحْدَرِيُّ، فُضَيْلُ بْنُ حُسَيْنٍ حَدَّثَنَا أَبُو عَوَانَةَ، عَنْ عَبْدِ الرَّحْمَنِ،
 بْنِ الأَصْبَهَانِيِّ عَنْ أَبِي صَالِحٍ، ذَكْوَانَ عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ، قَالَ جَاءَتِ امْرَأَةٌ إِلَى رَسُولِ
 اللَّهِ صلى الله عليه وسلم فَقَالَتْ يَا رَسُولَ اللَّهِ ذَهَبَ الرِّجَالُ بِحَدِيثِكَ فَاجْعَلْ لَنَا مِنْ نَفْسِكَ
 يَوْمًا نَأْتِيكَ فِيهِ تُعَلِّمُنَا مِمَّا عَلَّمَكَ اللَّهُ ‏.‏ قَالَ ‏"‏ اجْتَمِعْنَ يَوْمَ كَذَا وَكَذَا ‏"‏ ‏.‏ فَاجْتَمَعْنَ فَأَتَاهُنَّ
 رَسُولُ اللَّهِ صلى الله عليه وسلم فَعَلَّمَهُنَّ مِمَّا عَلَّمَهُ اللَّهُ ثُمَّ قَالَ ‏"‏ مَا مِنْكُنَّ مِنِ امْرَأَةٍ تُقَدِّمُ
 بَيْنَ يَدَيْهَا مِنْ وَلَدِهَا ثَلاَثَةً إِلاَّ كَانُوا لَهَا حِجَابًا مِنَ النَّارِ ‏"‏ ‏.‏ فَقَالَتِ امْرَأَةٌ وَاثْنَيْنِ وَاثْنَيْنِ
 وَاثْنَيْنِ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ وَاثْنَيْنِ وَاثْنَيْنِ وَاثْنَيْنِ ‏"‏ ‏.‏