15. Al-Husayn ibn Ibrahim ibn Ahmad ibn Hisham al-Mukattib said: Muhammad ibn Abu `Abd Allah al-Kufi said: Musa ibn `Imran al-Nakha`I on the authority of his uncle al-Husayn ibn Yazid al-Nawfali on the authority of `Ali ibn Salim on the authority of Abu Basir said Abu `Abd Allah al-Sadiq said:

“Whoever recites the chapter: Say: He, Allah is One, once, it is as if he has recited one third of the Qur`an, one third of the Torah, one third of the Bible, and one third of the Psalms (of David).”