23. A number of our people have narrated from Sahl ibn Ziyad from Isma’il ibn Mehran from Safwan ibn Yahya from ‘Abd Allah ibn Sinan from Abu ‘Abdillah عليه السلام who has said the following: “Whoever at the time of going to bed reads Chapter 109 of the Holy Quran, Allah, the Most Majestic, the Most Holy, will write down for him immunity from polytheism.”