Sūra al-Sāffāt (Arabic: سورة الصافات) is the thirty seventh sura of the Qur'an. It is a Makki sura located in juz' twenty three. "Al-Saffat" means those who stand in a line. It is said that it refers to angels in line or believers who perform prayer. The main topic of this sura is monotheism, warning polytheists and giving good news to believers. In this sura, the story of sacrificing Isma'il (a) and parts of the history of the prophets (a), including Noah (a), Abraham (a), Isaac (a), Moses (a), Aoron (a), Elias (a), Lot (a) and Jonah (a) are mentioned.
One of the famous verses of this sura is the verse "Salam-un 'ala El-Yasin..." which is also pronounced "Al-i Yasin", and it is said that it refers to the Ahl al-Bayt (a) of the Prophet (s). According to hadiths, if a person recites this sura on Friday, he will be safe from any harm, afflictions will be away from him in this world, and his daily sustenance will reach the maximum limit.