Some context: Louis A. Szekely (born September 12, 1967), better known by his stage name Louis C.K. (), is an American stand-up comedian, writer, actor, and filmmaker. He is known for his use of observational, self-deprecating, dark, and shock humor. In 2012, C.K. won a Peabody Award and has received six Primetime Emmy Awards, as well as numerous awards for The Chris Rock Show, Louie, and his stand-up specials Live at the Beacon Theater (2011) and Oh My God (2013). He has won the Grammy Award for Best Comedy Album twice.
In August 2005, C.K. starred in a half-hour HBO special as part of the stand-up series One Night Stand. Inspired by the work ethic of fellow comedian George Carlin, who had committed to dropping all of his existing material and starting over every year, In June 2006, C.K. starred in and wrote Lucky Louie, a sitcom he created. The series premiered on HBO and was videotaped in front of a studio audience; it was HBO's first series in that format. Lucky Louie is described as a bluntly realistic portrayal of family life. HBO canceled the series after its first season. He appeared in three films in 2008: Welcome Home Roscoe Jenkins, Diminished Capacity, and Role Models. C.K. launched his first hour-long special, Shameless, in 2007, which aired on HBO and was later released on DVD. In March 2008, he recorded a second hour-long special, Chewed Up, which premiered on Showtime Network on October 4, 2008, and was nominated for a Primetime Emmy Award for Outstanding Writing for a Comedy or Variety Special.  C.K. and his wife Alix Bailey divorced in 2008, with C.K. and Bailey sharing joint custody of their children. In a 2010 interview, C.K. talked about how, after his divorce, he thought, "well, there goes my act." He alluded to the way that his marriage had been central to his act and his life, and he said that it took him approximately a year to realize "I'm accumulating stories here that are worth telling." One element in his preparation for stand-up was training at the same boxing gym as Lowell, Massachusetts fighter Micky Ward, trying to "learn how to ... do the grunt work and the boring, constant training so that you'll be fit enough to take the beating."  On April 18, 2009, C.K. recorded a concert film titled Hilarious. Unlike his previous specials--which had all been produced for television networks--Hilarious was produced independently, directed by C.K. himself, and sold to Epix and Comedy Central after it was complete. As a result, it was not released until late 2010. It was published on DVD and CD in 2011. It is the first stand-up comedy film accepted into the Sundance Film Festival. From 2009 to 2012, C.K. played Dave Sanderson, a police officer and ex-boyfriend of Leslie Knope (played by Amy Poehler) in the sitcom Parks and Recreation. He also co-starred in the romantic comedy fantasy film The Invention of Lying, directed by and starring Ricky Gervais, in 2009.
Did he have any other stand up appearances?
A: In June 2006, C.K. starred in and wrote Lucky Louie, a sitcom he created.

Some context: Umar was born in Mecca to the Banu Adi clan, which was responsible for arbitration among the tribes. His father was Khattab ibn Nufayl and his mother was Hantama bint Hisham, from the tribe of Banu Makhzum. In his youth he used to tend to his father's camels in the plains near Mecca. His merchant father was famed for his intelligence among his tribe.
Umar attended the event of Ghadir Khumm, which took place a few months before Muhammad passed away. According to both Shia and Sunni sources, he was among the many who pledged allegiance to Ali at the event.  In Medina, after the Farewell Pilgrimage and the event of Ghadir Khumm, Muhammad ordered an army under the command of Usama bin Zayd. He commanded all the companions, except for his family, to go with Usama to Syria to avenge the Muslims' defeat at the Battle of Mu'tah. Muhammad gave Usama the banner of Islam on the 18th day of the Islamic month of Safar in the year 11 A.H. Abu Bakr and Umar were among those that Muhammad commanded to join Usama's army.  However, Abu Bakr and Umar resisted going under the command of Usama because they thought that he, who was 18 or 20 at the time, was too young to lead an army, despite Muhammad's teachings that age and standing in society did not necessarily correspond to being a good general.  In response to these worries, the Prophet said: "O Arabs! You are miserable because I have appointed Usama as your general, and you are raising questions if he is qualified to lead you in war. I know you are the same people who had raised the same question about his father. By God, Usama is qualified to be your general just as his father was qualified to be a general. Now obey his orders and go." Whenever Muhammad felt any relief from his fatal sickness, he would inquire as to whether Usama's army had left for Syria yet, and would continue urging his companions to leave for Syria. Muhammad even said, "Usama's army must leave at once. May Allah curse those men who do not go with him." However, while a few companions were ready to join Usama's army, many other companions, including Abu Bakr and Umar, disobeyed Muhammad's orders. It is also noted that this was the only battle expedition where Muhammad urged his companions to go the battle no matter what; for other battles, if someone was unable to go to the fight, Muhammad would let them stay at home.
Did he listen and leave?
A:
a few companions were ready to join Usama's army, many other companions, including Abu Bakr and Umar, disobeyed Muhammad's orders.