Deletion of Hadith of black flags

Comment: passes  it can expanded in the contemporary  contest about Islamic groups using black flags and also in the historical contest  Google scholar https://scholar.google.co.in/scholar?hl=en&as_sdt=0%2C5&q=Hadith+of+black+flags&btnG= shows over 1900 articles and https://www.google.co.in/search?q=hadith+of+black+flags&source=lnms&sa=X&ved=0ahUKEwiPjvyclqLcAhUGSI8KHUhGBFMQ_AUICSgA&biw=1902&bih=947&dpr=1 over 180000 results
Stance: keep
Cited policy: Wikipedia:Notability (WP:GNG)