It is narrated from Sayyidah Umm Habibah (may Allah be pleased with her) that she was married to Abdullah bin Jahsh, and he went to the Negus (al-Najashi) and died there. Then the Messenger of Allah (peace and blessings be upon him) married Umm Habibah (may Allah be pleased with her) while she was at that time in the land of Abyssinia. The Negus gave her in marriage to the Messenger of Allah (peace and blessings be upon him), and the Messenger of Allah (peace and blessings be upon him) did not send her anything on that occasion. The dowry (mahr) of the wives of the Prophet (peace and blessings be upon him) was four hundred dirhams.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19706