Hazrat Abu Huraira (may Allah be pleased with him) narrated that the Noble Prophet (peace and blessings of Allah be upon him) said: When any one of you lies down on his bed, he should first dust his bed with the edge of his lower garment, because he does not know what may have come onto it in his absence. Then he should recite this supplication: "O my Sustainer! In Your name I have laid down my side and in Your name I will raise it. If You take my soul, then have mercy on it, and if You let it go (keep me alive), then protect it as You protect Your righteous servants."