Is it possible to hear the mayat speak

Asalamualaikum Most respected Moulana A family member of mine passed away while studying as an Alim (Shaheed). An Alim who was instrumental in the ghusal and kafan (who had only met my marhoom a few times) Narrated this story anonymously That on the way to the qabrestaan for the burial while carrying the janaza he heard the marhooms voice tell him Moulana you must please be the last to leave ( meaning from the grave after the burial) Most respected Moulana I would like to know if it's possible for the mayit to speak or could it have been something else commanded to speak on his behalf Jazakallah khayr