Hadith Sciences & Verification

Muhtaram Mufti saheb D.B Assala mualaikum Is the hadeeth about a person gets 70 times more reward in wearing a turban while praying than if you were turban-less sahih or fabricated? Could you please provide reference.Jazakumullah u Khair

Assalamualaikum, I hear people who reject the hadith saying they were collected 200 years after the prophets death and can no way can be reliable, is this true?

Assalamu alaikum Respected Mufti, Why is it that a Hadith is graded weak by some Ulamah whilst the same Hadith is graded sahih by other Ulama? Could example be given to illustrate the point please?

A widespread story has been circulated amongst Muslim laymen about a non-Muslim woman who threw dirt on the Prophet everyday until the Prophet consoled her while she was sick, which lead her to accept Islam. Is there any reference to this story in any books of hadith or seerah?