She said, Abu Bakr came in while two young girls from the Ansar were with me, singing the verses the Ansar had recited about the Battle of Buath. She said, They were not professional singers.Abu Bakr exclaimed, "Musical instruments of Satan in the house of the Messenger of Allah ﷺ?" This happened on the day of Eid.The Messenger of Allah ﷺ said, "Abu Bakr, every people has its festival, and this is our festival."
قالت: دخل أبو بكر وعندي جاريتان من جواري الأنصار تغنينان بما تقاولت الأنصار يوم بعاث. قالت: وليستا بمغنيتين، فقال أبو بكر: أمزامير الشيطان في بيت رسول الله ﷺ؟ وذلك في يوم عيد. فقال رسول الله ﷺ: يا أبا بكر! إن لكل قوم عيدا، وهذا عيدنا.
Bukhari narrated it in Eidayn (952), and Muslim in Eidayn (892), both through Abu Usama, from Hisham, from his father, from Ayesha, who related it. Their wording is the same, and it will come with more detail in the chapter on the permissibility of play on the day of Eid.