It is narrated from Sayyiduna Abu Umamah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "It is not lawful to buy or sell singing slave girls, nor to trade in them, and their price is unlawful," and he (peace and blessings be upon him) recited this verse: "And among the people is he who buys idle talk to lead (people) astray from the path of Allah without knowledge" [Surah Luqman: 6].
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7824