Reference: Fataawa al-Lajnah ad-Daa.imah lil-Buhooth al-‘Ilmiyyah wal-Iftaa., – Volume 12, Page 364, Question 6 of Fatwa No.5666
Question: Whenever my family have any occasion (gathering) such as a wedding, circumcision or funeral, in the wedding and circumcision celebrations they use a drum and make ululations of joy, and on the occasion of a death they wail in an outrageous fashion. So is it right for me to go to these gatherings or not when they practice these innovations?
Response: It is not permissible for you to go to a gathering in which these evil actions take place, unless you are able to [interfere and] put a stop to these innovations and advise them and teach them in a good manner. [If you are able to do this,] then go and enjoin the good and forbid the evil, [otherwise, it is not permissible for you to go].
And with Allaah lies all success and may Allaah send prayers and salutations upon our Prophet (sal-Allaahu ‘alayhi wa sallam) and his family and his companions.