Abu Hurairah (May Allah be pleased with him) said:
I heard the Messenger of Allah ﷺ as saying: "Jews and Christians do not dye their hair, so act differently from them."

[Al-Bukhari and Muslim].

وعن أبي هريرة رضي الله عنه أن رسول الله ﷺ قال: "إن اليهود والنصارى لا يصبغون، فخالفوهم" ((متفق عليه)) .