The ruling on reciting qira'at (canonical recitations) not found in the mushaf (written copy of the Qur'an) in the presence of the general public

Question : He asks: How do we say that it is necessary to know the qira'at and recite with them, while 'Ali ibn Abi Talib (may Allah be pleased with him) said, “Inform the people of what they know”?

Answer : We have said repeatedly, O 'Aqil, that the qira'at not found in the mushaf should not be recited in the presence of the general public. That is what we said. Do not recite with what is not in the mushaf that is in the hands of the general public. However, between you and yourself in your prayer, when you are not the imam, recite. But in the presence of the general public, do not recite, because if you recite, one of two things will happen: either they will say, “This is a man who does not know, and we do not want him to be our imam,” or they will doubt the Qur'an, asking, “How is the Qur'an being manipulated, once this way and once that way?”
Therefore, do not inform the general public of what their minds cannot grasp, as 'Abdullah ibn Mas'ud (may Allah be pleased with him) said, “You will not inform a people of a report that their minds cannot grasp without it becoming a fitnah (trial, discord or temptation) for some of them.”