compared to "eating the flesh of [one's] brother". Equality of mankind Verse 13 is one of the most famous verses of the Quran: O mankind, surely We have created you from a male and a female, and made you tribes and families that you may know each other. Surely the noblest of you with Allah is the most dutiful of you. Surely Allah is Knowing, Aware. Commentators on the Quran, including Abul A'la Maududi and Sayyid Qutb, argued that this verse declares the equality of mankind. Mankind is spread around the world and has different nations and tribes to know each other, and no one is superior based on color, race, or origin. According to the verse, only taqwa (piety, fear of God) makes one nobler before God. According to the commentary of The Study Quran, this verse marked a reform of the moral order in Arabia, where previously one's worth had been determined by "lineage and grandiose displays of valor and generosity" and where fear of God had been seen as the opposite of nobility, to one which focused on "the depth of faith and piety". Nature of faith The remaining verses (14 to 18) contain clarifications on the Quranic view of faith. Verse 14 indicates degrees of faith: Islam (submission) and the higher iman (belief). According to verse 15, a true believer believes in God and Muhammad without doubt, and proves it through devotion and the spending of one's wealth in the way of God. The chapter closes by saying that only God knows the real extent of one's faith. Revelation history According to most scholars of the Islamic tradition, the chapter was revealed in late Medinan period, therefore, it is a Medinan sura. It is most likely revealed in 630 CE (or 9 AH), after the Conquest of Mecca and when Muhammad already ruled most of Arabia. A minority opinion, including that of the exegete Mahmud al-Alusi, says that the thirteenth verse was revealed in the Meccan period. The traditional Egyptian chronology puts the chapter as the 106th chapter by the order of revelation (after Al-Mujadila), while the Nöldeke Chronology (by the orientalist Theodor Nöldeke) puts it as the 112th. Muslim historians, such as Al-Waqidi and Ibn Ishaq, linked the revelation of several verses to the conduct of a delegation from the Banu Tamim when they were in Medina to meet with Muhammad. According to Al-Waqidi, the