Question 31: People differ regarding making Du`aa’ (supplication) collectively and immediately after finishing the Funeral Prayer. Some say that this practice is a Bid`ah (innovation in religion) because it is not reported from the Prophet (peace be upon him) or his noble Sahaabah (Companions) and jurists explicitly declare it as impermissible. On the contrary, other people are of the view that making Du`aa’ collectively and immediately after finishing the Funeral Prayer is something that is preferred and regarded as a Sunnah (a commendable act). Which of these two opinions is correct?
Answer: Du`aa’ is a form of `Ibaadah (worship) and all acts of `Ibaadah are based on Tawqeef (a religious text and not personal opinion) for no one is allowed to offer any `Ibaadah that is not ordained by Allaah (Exalted be He)… read more here.