Hadith.328 - Imam Jafar ibn Muhammad Al-Sadiq عليه السلام said:
"Whoever grows their hair and does not part it, Allah سبحانه وتعالى will part it with a saw of fire."
The hair of the Messenger of Allah صلى الله عليه وعلى آله وسلم was shoulder-length but did not reach (enough) to part.
