Abu Sa'id and Abu Huraira reported God’s messenger as saying that if anyone says “There is no god but God and God is most great”, his Lord will declare that he has spoken the truth, saying, “There is no god but me, and I am most great.” When he says, “There is no god but God alone who has no partner,” God says, “There is no god but me alone who has no partner.” When he says, “There is no god but God to whom belongs the dominion and to whom praise is due,” He says, “There is no god but me to whom belongs the dominion and to whom praise is due.” When he says, “There is no god but God, and there is no might and no power except in God,” He says, “There is no god but me, and there is no might and no power except in me.” He used to say that if anyone said these words in his last illness, hell would not devour him. Tirmidhi and Ibn Majah transmitted it.