Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrated (Allah Almighty says): "And you are in play (that is, heedlessness)." Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) said: It means singing and music.
Al-Bazzar recorded it, and its narrators are the narrators of the Sahih.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب التفسير / 11381