From Sahih Bukhari (Hadith 7149):
Narrated Abu Musa:Two men from my tribe and I entered upon the Prophet. One of the two men said to the Prophet, "O Allah's Messenger (ﷺ)! Appoint me as a governor," and so did the second. The Prophet (ﷺ) said, "We do not assign the authority of ruling to those who ask for it, nor to those who are keen to have it
Reference: Bukhari 7149