Didn't Messenger Peace be upon him asked his companions to be witness that He has successfully delivered and completed the Deen? What was the purpose for that?
Deen means system. In his last address to the people, Prophet peace be upon him said that he has delivered a complete Deen. You have made that address just an address of Khatm-ul-Quran.
Didn't Abu Bakar May ALLAH be pleased with him addressed Muslims right after Wisal of Muhammad Peace be upon him that
"O people, those of you who worshiped Muhammad Peace be upon, should know that he has died, and those of you who worship ALLAH, should know that ALLAH is immortal."
The verse you quoted clearly addresses the people of State that Muhammad Peace be upon him was heading, obviously any law that Muhammad Peace be upon him formulated in accordance with the needs of that time was to be fully obeyed by the people of that time ....... and again obviously Muhammad Peace be upon him didn't formulate laws based on his personal capability, he derived guidance from the divine message.
Where did you feel that I was trying to say that we should worship Prophet Muhammad peace be upon him?
Personal capacity of Prophet Muhammad peace be upon him was also given by Almighty Allah. As it comes in the holy Quran..
وَمَا يَنطِقُ عَنِ الْهَوَىٰ
"Nor does he speak from [his own] inclination"
So whenever we talk about personal capacity, please don't make it "personal capacity of Prophet Muhammad peace be upon him" vs "authority of Almighty Allah".
It isn't that after the departure of Prophet Muhammad peace be upon him from this world, his Companions, the four Caliphs stopped quoting him, or changed the method of prayer, pilgrimage and Zakat than what was told by Prophet Muhammad peacepeace be upon him. There are hundreds of traditions in which it is mentioned that the Companions drew conclusions through the sayings of Prophet Muhammad peace be upon him.
Okay ......... if you are so sure then why people keep saying this is Zaheef, that is Kazab etc etc?
Everything that is written and preserved was based on verbal narrations by people who weren't even present when that even may have occurred. This written and preserved material tells you that Ayesha May ALLAH be pleased with her was married as young as 9 years old, and entered the marriage contract when she was 6 years old playing with dolls.
Hadiths are preserved well that is the reason any fabricated Hadith is detected at once. No other text in the world is collected and preserved after so much scrutiny than the Hadiths.
Weak Hadith means that you can't make rules on the basis of that Hadith. Apart from that you are free to act upon it or not or base your belief on that Hadith or not.
What is your problem if Hazrat Ayesha may God be pleased with her was so young. Her father was alive, he had the authority. When she grew up she didn't object the marriage. You please see the services of Hazrat Ayesha may God be pleased with her, for Islam. She taught Islam to women and lived many years after the departure of Prophet Muhammad peace be upon him from this world. You think this act of Prophet Muhammad peace be upon him was without any wisdom?