What is the authenticity of the Hadith: "Whoever says after the prayers and when he lies down to sleep: 'Allah is the Greatest, Most Great, the number of the even and the odd, and the good and blessed words of Allah' – three times – and 'There is no god but Allah' – likewise – they will be a light for him in the grave, a light on the Day of Resurrection, and a light on the Siraat, until he enters Paradise"?

Ibn Abi Shaybah narrated from Ibn Umar his saying: "Whoever says after every prayer, and when he takes to his bed: 'Allahu Akbar kabiran adada ash-shaf'i wal-watri, wa kalimati Allahi at-tammati at-tayyibati al-mubarakati' (Allah is Most Great, immensely so, as many times as the even and the odd, and as many times as the perfect, good, blessed words of Allah), three times, and 'La ilaha illa Allah' (There is no god but Allah) likewise, these will be a light for him in his grave, a light on the bridge, and a light on the Siraat until they admit him into Paradise." The chain of narration for this tradition is authentic, and it is a saying of Ibn Umar, and it may have the ruling of being مرفوع (traced back to the Prophet).