The Noble Qur'an came to Nabi Muhammad Alaihi Salaat-u-Wassalam. One cannot be understood without the other. Having said that, if any Hadith is in conflict with the Noble Qur'an, then it is the Noble Qur'an whom we put first and foremost. It is our job to study the Noble Qur'an and find the harmonious whole between the two.
True that. But the earliest collection of Hadith texts, Muwatta Imam Malik, makes no mention of the second coming of Jesus. It's mentioned in later collections only. Besides several classical scholars, modern day scholars like Grand Muftis of Al-Azhar (including Muhammad Shaltout), Sheikh Muhammad Abduh (Grand Mufti of Egypt), Allama Muhammad Asad (Religious advisor to Jinnah), Sir Syed Amed Khan, Allama Iqbal, Abdulkalam Azad, Ubaidullah Sindhi, etc. also maintain that the coming of Messiah is probably a concept borrowed from other religions.
As pointed out by Dr. Shabbir, The dogma of a promised one is found almost in every religion of the world.
When the Messiah of the Jews comes he will bestow upon them the everlasting kingdom.
When the Messiah of the Christians shows up again, mankind will unite under Christendom.
Likewise when the Meeta, Buddha II arrives he will erase all religions and turn every human being into a Mahatma.
The Mithra of Zoroastrians will herald the return of the lost Maggian glory for his followers.
The "Kalki Avtaar" will revive Hinduism to total victory.
The Tri-Thanker of Jainism will unify all human beings on earth into his religion. Then all people will become Bugs Bunnies eating plants only.
It is amazing to note that even some ancient tribes of Africa and the Americas charm themselves with this "redeemer" concept.