Riyad as-Salihin — Hadith #46432

On the authority of Ali, may God be pleased with him, that the Messenger of God, may God’s prayers and peace be upon him, said to him and to Fatima, may God be pleased with them both: “When you go to your bed, or: when you go to your bed - then say ‘Allahu Akbar’ thirty-three times, and ‘Subhanahu’ thirty-three times, and ‘Alhamdulillah’ thirty-three times.” And in one narration: “Al-Tasbih thirty-four” and in a narration: “Allahu Akbar thirty-four times.” ((Agreed upon)).