سنن النسائي

It was narrated that 'Amir bin Sa'd said: "I entered upon Qurazah bin Ka'b and Abu Mas'ud Al-Ansari during a wedding and there were some young girls singing. I said: 'You are two of the Companions of the Messenger of Allah (ﷺ) who were present at Badr, and this is being done in your presence!' They said: 'Sit down if you want and listen with us, or if you want you can go away. We were granted a concession allowing entertainment at weddings.'"