"Bewailing" is wailing over the dead. It is weeping loudly for the deceased describing his noble qualities or the problems created by his death. Wailing causes trouble to the deceased if he willed his heirs to do so, or in his own life he behaved in the same manner and his family members were following his style of mourning at his death. But if the deceased had forbidden his relatives from wailing over his death and they do it despite his warning against doing so, then the deceased will not suffer any torment on their wailing because his intention and training have no connection with it. The Qur'anic injunction in this matter is absolutely clear:
"No one laden with burdens can bear another's burden." (17:15).