´It was narrated that Muhammad bin Hatib said:` "The Messenger of Allah said: 'What differentiates between the lawful and the unlawful is the Duff, and the voice (singing) for the wedding.'"
Hadith ReferenceSunan an-Nasa'i / The Book of Marriage / Hadith: 3371
Hadith Gradingالألبانی:حسن | زبیر علی زئی:حسن
Hadith Takhrij«سنن الترمذی/النکاح 6 (1088)، سنن ابن ماجہ/النکاح 20 (1896)، (تحفة الأشراف: 11221)، مسند احمد (3/418 و4/259) (حسن)»