Kathirah bin Murrah says that during his illness of death, Hazrat Mu'adh bin Jabal (may Allah be pleased with him) said to us: I have heard a hadith from the Noble Prophet (peace and blessings be upon him) which I have kept hidden from you until now (but I am narrating it now). I heard the Noble Prophet (peace and blessings be upon him) say: Whoever's last words at the time of departing from this world are "La ilaha illallah" (There is no god but Allah), Paradise becomes obligatory for him.