The holy hair of the pure Prophet Muhammad (S) does indeed grow by itself, Alhamdulillah!
Don't be cynical!
The holy hair of Rasool Allah (SAW) does indeed grow by itself, Subhan Allah!
And what proof do you have of this miracle?
The Prophet PBUH passed away and was a mortal human.
He was buried in a grave like mortal men.
When the Prophet Muhammad (PBUH) passed away some people could not believe it and were arguing and threatening those who said that the Prophet had passed away.
This was when Abu Bakar (RA) gave his famous speech to the Muslims implying that those who worshiped Muhammad should know that he was a mortal man and has passed on to his maker, however those that worship Allah should know that he is ever present.
The Prophet Muhammad was the greatest of human beings and that fact is as clear as the sun that shines in the sky, however to attribute unsubstantiated claims to him is not something we should do lightly and without investigation.
The fact that many do not appreciate is that Muhammad PBUH was the most complete human being and his personality, manners, patience, truthfulness, speech and conviction enabled him to pass the divine message to the Arabs who were really a hostile and a very difficult people to persuade at that point in time.
The biggest miracle of the Prophet Muhammad PBUH was the loyalty, love and respect he was accorded by his followers, something which was amazing.
The Prophet Muhammad was the finest, most loved and most successful human being and that is the biggest miracle to me.