´It was narrated that Anas said:` "The hair of the Prophet [SAW] was wavy, neither curly nor straight, and (hung down) between his ears and his shoulders."
Hadith ReferenceSunan an-Nasa'i / The Book of Adornment / Hadith: 5056
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:متفق عليه