Ruling concerning khutbah
     The majority of the people of knowledge are of the    opinion that khutbahtul Jumu'ah is obligatory and they    support this by the confirmed hadith which state that the    Prophet always made the khutbah with the Jumu'ah. In    their support they also quote the saying of the Prophet:    "Pray as you see me pray," and the Qur'anic verse: "O you    who believe, when the call is proclaimed for salatul    jumu'ah, hasten unto the remembrance of Allah." This    verse contains an order to hasten unto the remembrance,    which implies it is obligatory, and (the scholars)    interpret the remembrance of Allah to include the    khutbatul Jumu'ah. AshShaukani refutes the first argument    by saying that hadith simply states the action of the    Prophet sallallahu alehi wasallam and does not    necessarily prove that such an action is obligatory. As    to the verse, he regards it as simply a command to be    present at the salah which is obligatory and excludes    khutbah... Regarding their argument relating to the    commandment to "hasten unto the rememberance of Allah,"    he says it refers to salah only, which is the real cause    for making haste. There is, however, an agreement that    the Friday salah is obligatory while there is a dispute    over whether or not the khutbah is obligatory.
    Ash-Shaukani concludes by saying that apparently the    correct view is the one held by al-Hassan al-Basri, Dawud    az-Zahiri and al-Juwaini, that the khutbah is only a    highly recommended act.
    
The greeting of the imam
     The imam should greet the people when he comes upon the    pulpit, followed by the adhan which is to be made when he    sits. The imam should face the people during the adhan.
         Jabir reports that when the Prophet mounted the pulpit,    he would greet the people. This is related by Ibn Majah    and in its chain is Ibn Lahiya, and al-Athram has    recorded it in his Sunnan from ash-Sha'biy, on the    authority of the Prophtet, in mursal form. Ata' and    others also reported in mursal form that when the Prophet    walked to the top of the pulpit, he would turn to the    people and say: "Peace be upon you." According to    ashSha'biy: "Abu Bakr and 'Umar used to do that [also]."
         As-Sa'ib ibn Yazid informs: "The first adhan to salah    made on the day of Jumu'ah was made when the imam sat    upon the pulpit during the time of the Prophet, Abu Bakr,    and 'Umar. Then, during the time of 'Uthman, since there    were many people, he instituted a third adhan outside the    mosque. The Prophet only had one mu'adhdhin." This is    related by alBukhari, an-Nasa'i, and Abu Dawud. In    another narration, it is stated: "During the time of    'Uthman, there were many people, so 'Uthman ordered the    people to make a third call to salah on the day of    Jumu'ah, outside of the mosque, and that practice has    continued."
         Ahmad and an-Nasa'i record: "Bilal would make the adhan    to salah when the Prophet sallallahu alehi wasallam sat    upon the pulpit, and he would make the iqamah when the    Prophet came down from the pulpit."
         'Adi ibn-Thabit relates from his father on the authority    of his grandfather who said: "When the Prophet ascended    the pulpit, he would face his companions." This is    related by Ibn Majah. Concerning this latter hadilh,    although there is some doubt about it, at-Tirmidhi says:    "The people of knowledge from among the companions and    others follow that and they prefer that the imam face the    people when delivering the khutbah. "    
We are identifying and building the related set of Ayahs for this Hadith. Please share your feedback and let us know if you identify any referencing issues.
"When a person dies, his works end, except for three: ongoing charity, knowledge that is benefited from, and a righteous child who prays for him."
Prophet Mohammed (PBUH)
"The best of what a man leaves behind are three: a righteous child who supplicates for him, ongoing charity the reward of which reaches him, and knowledge that is acted upon after him."
Sunan Ibn Mājah
"Every day two angels come down from Heaven and one of them says, 'O Allah! Compensate every person who spends in Your Cause,' and the other (angel) says, 'O Allah! Destroy every miser.'"
Sahih Bukhari