A'as ibn Wa'il is the son of Wa'il ibn Umayya aka Abu al-A'as. His brother was Affan ibn Wa'il, the father of Uthman. He is the father of Amr ibn al-A'as and Hisham ibn al-A'as. He was a part of Hilf al-Fudul He was rumored to have had a relationship with Layla bint Harmalah Surat al-Kawthar is the 108th sura of the Qur'an, and the shortest. According to Ibn Ishaq, it was revealed in Makka, some time before the Isra and Miraj, … Wikipedia
The definitive Wikipedia entry for A'As Ibn Wa'Il. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/A%27as_ibn_Wa%27il