Sunan an-Nasa'i, Book 21, Hadith 55 (In-Book) ⓘ
It was narrated from Anas that the Messenger of Allah said: "Whoever seeks reward for (the loss of) three of his own children, he will enter Paradise." A woman stood up and said: "Or two?" He said: "Or two." The woman said: "I wish that I had said, 'or one."'
أَخْبَرَنَا أَحْمَدُ بْنُ عَمْرِو بْنِ السَّرْحِ، قَالَ حَدَّثَنَا ابْنُ وَهْبٍ، حَدَّثَنِي عَمْرٌو، قَالَ حَدَّثَنِي بُكَيْرُ بْنُ عَبْدِ اللَّهِ، عَنْ عِمْرَانَ بْنِ نَافِعٍ، عَنْ حَفْصِ بْنِ عُبَيْدِ اللَّهِ، عَنْ أَنَسٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " مَنِ احْتَسَبَ ثَلاَثَةً مِنْ صُلْبِهِ دَخَلَ الْجَنَّةَ " . فَقَامَتِ امْرَأَةٌ فَقَالَتْ أَوِ اثْنَانِ قَالَ " أَوِ اثْنَانِ " . قَالَتِ الْمَرْأَةُ يَا لَيْتَنِي قُلْتُ وَاحِدًا .
also referenced under: Hadith 1872 (Reference) & Volume 3, Book 21, Hadith 1873 (DarusSalam)