I was riding behind Ibn Umar when he passed by a shepherd who was playing a flute, and he then mentioned something similar.
حدثنا محمود بن خالد حدثنا أبي حدثنا مطعم بن المقدام قال
كنت ردف ابن عمر إذ مر براع يزمر فذكر نحوه
No references are available.
Its chain is sahih. Tabarani narrated it in Al-Saghir (1/13) from the hadith of Mahmud bin Khalid.