Musannaf Ibn Abi Shayba 16:865

Abu Bakr narrated to us, he said: Isa ibn Yunus narrated to us, from Usama, he said: When it was Friday, Umar ibn Abd al-Aziz would send the guards, and they would take hold of the doors of the mosque. They would not find a man with abundant hair—meaning excessive hair—without them cutting it.