Khalid bin Mahran al-Hadha' خالد بن مهران الحذاء · The Chapters on Jihad

“It is as if I can see the Messenger of Allah (ﷺ), wearing a black turban, with its two ends hanging between his shoulders.”

“Among those in charge of you, after I am gone, will be men who extinguish the Sunnah and follow innovation. They will delay the prayer from its proper time.” I said: “O Messenger of Allah, if I live to see them, what should I do?” He said: “You ask me, O Ibn ‘Abd, what you should do? There is no obedience to one who disobeys Allah.”