Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both) says that the Messenger of Allah (peace and blessings be upon him) said: "There should be no dowry less than ten dirhams."
Abu Ali al-Hafiz said: Mubashshir bin Ubayd is matruk al-hadith (abandoned), and this is munkar (denounced); no one corroborated him in it. Ali (al-Daraqutni) said: Mubashshir bin Ubayd is matruk al-hadith; his hadiths are not corroborated. The Shaykh (may Allah have mercy on him) said: Al-Hajjaj bin Artah is not used as evidence, and no one brought it from al-Hajjaj except Mubashshir bin Ubayd al-Halabi, whom they unanimously abandoned; and Ahmad bin Hanbal (may Allah have mercy on him) used to accuse him of fabricating hadith.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصداق / 14384