Imaam Ibn Maajah -rahimahullaah- reported in his ‘Sunan’ (The Book of Funerals: Chapter 58: What occurs regarding one who suffers a miscarriage: no. 1609):
`Alee ibn Haashim ibn Marzooq narrated to us, saying: `Abeedah ibn Humayd narrated to us, saying: Yahyaa ibn `Ubaydillaah narrated to us: from `Ubaydullaah ibn Muslim al-Hadramee: from Mu`aadh ibn Jabal: from the Prophet (Peace be upon him) that he said:
“By the One in Whose Hand is my soul! The miscarried foetus will pull its mother into Paradise by its umbilical cord, if she patiently awaits reward regarding it“
Shaikh al-Albaanee said: “Saheeh”.
[Translated by Aboo Talhah Daawood ibn Ronald Burbank]
Source : www.alitisaambissunnah.wordpress.com