He was asked, "What was the hair of the Messenger of Allah ﷺ like?"He replied, "It was wavy, neither tightly curled nor completely straight, reaching between his ears and his shoulders."
أنه سئل: كيف كان شعر رسول الله ﷺ؟ قال: كان شعرا رجلا، ليس بالجعد ولا السبط بين أذنيه وعاتقه.
Bukhari related it in the Book of Dress (5905), and Muslim in the Book of Virtues (94:2338), both of them via Jareer bin Hazim, who said, Qatada narrated to us, saying, "I said to Anas bin Malik," and he mentioned it.