Hadith 961:104
'Affan narrated to us, Khalid—meaning al-Tahhan—narrated to us, Yahya al-Taymi narrated to us, from 'Ubayd Allah ibn Muslim, from Mu'adh, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "There are no two Muslims who have three [children] die for them, except that Allah will enter them both into Paradise by the grace of His mercy toward them." They said: "O Messenger of Allah, or two?" He said: "Or two." They said: "Or one?" He said: "Or one." Then he said: "By the One in whose hand is my soul, the miscarried fetus will surely drag its mother by its umbilical cord into Paradise, if she seeks reward [from Allah for her patience]."
حدثنا عفان، حدثنا خالد يعني الطحان، حدثنا يحيى التيمي، عن عبيد الله بن مسلم، عن معاذ قال: قال رسول الله صلى الله عليه وسلم: " ما من مسلمين يتوفى لهما ثلاثة إلا أدخلهما الله الجنة بفضل رحمته إياهما ". فقالوا: يا رسول الله أو اثنان؟ قال: " أو اثنان ". قالوا: أو واحد؟ قال: " أو واحد ". ثم قال: " والذي نفسي بيده إن السقط ليجر أمه بسرره إلى الجنة إذا احتسبته "