such as prohibition for sleeping during Sübh, And ethics of sitting down while drinking. Meanwhile, another example of this kind of Sunnah also included: on the difference in the number of lashes used to punish alcohol consumption, Caliph Ali reported that (Muhammad and Abu Bakr ordered 40 lashes, Umar 80) — "All this is sunna"; on Umar's deathbed instructions on where Muslims should seek guidance: from the Qur’an, the early Muslims (muhajirun) who emigrated to Medina with Muhammad, the Medina residents who welcomed and supported the muhajirun (the ansar), the people of the desert, and the protected communities of Jews and Christians (ahl al-dhimma); hadith of Muhammad are not mentioned. According to historians (particularly Daniel W. Brown), the classical Islamic definition of sunnah as the customs and practices of Muhammad (only) was not the original one. In al-Ṭabarī's history of early Islam, the term "Sunnah of the Prophet" is not only used "surprisingly infrequently", but used to refer to "political oaths or slogans used by rebels", or "a general standard of justice and right conduct", and not "to specific precedents set by Muhammad", let alone hadith. An early theological writing by Hasan al-Basri (Risala fi'l Qadar) also is "empty of references to specific cases" when mentioning "Sunnah of the Prophet". Daniel Brown states that the first extant writings of Islamic legal reasoning were "virtually hadith-free" and argues that other examples of a lack of connection between sunnah and hadith" can be found in: Kitāb al-Irjāʾ of al-Hasan b. Muhammad b. al-Hanafiyya, the first letter of Abdallah ibn Ibad to Abd al-Malik ibn Marwan, and the Risāla of Abu Hanifa addressed to ʿUthman al-Battī." According to one source (Ahmad Kazemi Moussavi and Karim Douglas Crow), early Sunni scholars often considered sunnah equivalent to the biography of Muhammed (sira). As the hadith came to be better documented and the scholars who validated them gained prestige, the sunnah came often to be known mostly through the hadith, especially as variant or fictional biographies of Muhammad spread. Four Madhhabs The golden age, starting with the creation of the Hanafi, Maliki, Shafi'i, Hanbali, etc. schools of fiqh in the second century of Islam, limited sunnah to "traditions traced back to the Prophet Muhammad himself" (sunna al-nabawiyyah). But the ancient "regional" schools of law, located in several major cities of the new Arab empire of Islam -- Mecca, Kufa, Basra, Syria, etc.,—had a more flexible definition