No, this is all lies of the Shia! The Prophet salla Allahu alaihi wa sallam didn’t appoint anyone to succeed him.

I have heard an incident (don’t know if it is true or not and don’t know full story) called “Gadir-e-Khum” related to Muhammad sallallahualaihiwasallam and Ali radiallahuanhu which some say about succession of rasulallah. Did something like it really happen?

Biography of the Prophet salla Allahu alahi wa sallam | November 10, 2015 3:30 am
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The worshiper may not stay steadfast when doubts arise due to his ignorance. Sheikh please clarify that is there any hadith which states that end of Prophethood doesn’t mean end of Messenger-ship? Kindly also mention few Sahih ahadith which explicitly state that Messenger-ship has been terminated.