Urwah (may Allah have mercy on him) narrates from Sayyidah Aishah (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) said: "Part of a woman's being blessed is that her marriage is easy, her dower is small, and her womb is easy for children." Urwah (may Allah have mercy on him) said: That is, her womb is easy for children. Urwah (may Allah have mercy on him) said: I consider the first sign of a woman's ill omen to be that her dower is large.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصداق / 14357