Some context: Abu Bakr as-Siddiq 'Abdallah bin Abi Quhafah (Arabic: 'bw bkr lSdyq `bd llh bn 'by qHf@; c. 573 CE - 22 August 634 CE), popularly known as Abu Bakr ('bw bkr), was a senior companion (Sahabi) and--through his daughter Aisha--the father-in-law of the Islamic prophet Muhammad. Abu Bakr became the first openly declared Muslim outside Muhammad's family. Abu Bakr served as a trusted advisor to Muhammad.
Abu Bakr 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.
When did Muhammad die?
A: 
Some context: The Moody Blues are an English rock band formed in Birmingham, England in 1964. They first came to prominence playing rhythm and blues music, but their second album, Days of Future Passed, which was released in 1967, was a fusion of rock with classical music and established them as pioneers in the development of art rock and progressive rock. It has been described as a "landmark" and "one of the first successful concept albums". The band became known internationally with singles including "Go Now", "Nights in White Satin", "Tuesday Afternoon", and "Question".
For their next two albums, Every Good Boy Deserves Favour (1971) - from which Hayward's "The Story in Your Eyes" was taken as a US charting single (No. 23) - and Seventh Sojourn (1972) (which reached No. 1 in the US), the band returned to their signature orchestral sound which, while difficult to reproduce in concert, had become their trademark. The title "Every Good Boy Deserves Favour" was borrowed, tongue-in-cheek, from a mnemonic used to remember the musical notes that form the lines of the treble clef: EGBDF. The opening track "Procession" was the only item composed by all five band members, a fascinating track depicting the "evolution" of music, leading into Hayward's "Story in Your Eyes". Thomas's reflective "Our Guessing Game" and whimsical "Nice To Be Here" offset the deeper drama of Hayward's "You Can Never Go Home", Lodge's "One More Time To Live" and Pinder's "My Song". Edge, the long-standing drummer-poet, started writing lyrics intended to be sung, rather than verses to be spoken - his "After You Came" (1971) featured each of the four lead singers taking a vocal section. Then in 1972, Lodge's songs "Isn't Life Strange?" (No. 13) and "I'm Just a Singer (In a Rock and Roll Band)" (No. 36) were lifted from Seventh Sojourn as charting UK singles. Sojourn also saw Pinder using the new Chamberlin instrument in place of the mellotron and Edge using an electronic drum kit. Pinder's stirring lament "Lost in a Lost World" opened this last "Core Seven" outing, while his sympathetic ode to Timothy Leary "When You're a Free Man", Thomas's romantic "For My Lady", and Hayward's serene "New Horizons" all stood out.  In an interview following the release of Seventh Sojourn, Graeme Edge told Rolling Stone: "We've got two Christians, one Mystic, one Pedantic and one Mess, and we all get on a treat."  By this time, other bands were picking up their work. Pinder's songs "A Simple Game" (1968) and "So Deep Within You" (1969) were successfully covered by the Four Tops, Pinder winning an Ivor Novello Award for "A Simple Game", Elkie Brooks later covered Hayward's "Nights in White Satin". Pinder also appeared on John Lennon's "Imagine" album in 1971, providing additional percussion on "I Don't Wanna Be a Soldier (I Don't Want to Die)". The 1968 to 1972 album sleeves, plus several solo sets up to Ray Thomas's "Hopes, Wishes & Dreams" in 1976, were characterised by striking surreal scenic sleeve artwork (mostly gatefold sleeves) by artist Phil Travers.  In late 1972, a re-issue of the five-year-old "Nights in White Satin" became the Moody Blues' biggest US hit, soaring to number two on the Billboard Hot 100 and becoming a certified million-seller; the song had "bubbled under" the Hot 100 charts on its original release. The song also returned to the UK charts, reaching No. 9, ten places higher than its original release in 1967.
Is Every good boy deserves favour and seventh sojourn an almum?
A:
two albums,