Imam al-Tabarani also recorded this report in al-Mu'jam al-Awsat; he states: The Prophet (peace and blessings be upon him) said: "Immoral women marry themselves off. A marriage is not valid without a guardian, two witnesses and a dowry, whether it (the dowry) is small or large." The chain of both contains a narrator, al-Rabi' bin Badr, and he is matruk (abandoned).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب النكاح / 7520