Accepting sincere advice and following the truth is one of the greatest obligations upon all of the Muslims, from whichever source it comes from. It is not permissible for a Muslim to belittle and disrespect the sincere adviser regardless what his status may be.
I seek refuge with Allah that I reject an advice and defend a mistake or falsehood which emanated from me; for indeed this is from fhe means to evil, infact it is from the ways of the people of corruption, arrogance and arrogant stubbornness. And when he is reminded he doesn’t take the reminder, as Allah said,
وَالَّذِينَ إِذَا ذُكِّرُوا بِآيَاتِ رَبِّهِمْ لَمْ يَخِرُّوا عَلَيْهَا صُمًّا وَعُمْيَانًا
And those who, when they are reminded of the Ayat (proofs, evidences, verses, lessons, signs, revelations, etc.) of their Lord, fall not deaf and blind thereat. (Al-Furqan: 73)
Shaykh Rabee bin Hadi Al-Madhkhali
Chapter on Humbleness from Al-Fusool al-Mudiyyah min Seerati ash-Shaykh Rabee bn Hadi ‘Umayr Al-Madhkhali wa Juhoodihi Al-Ilmiyyah wa ad-Da’awiyyah pg 152