What is the ruling on not being convinced by a fatwa that has reached a consensus regarding the ruling on boxing, and what is the relation of this conviction to denying what is known to be an indispensable part of religion?

The widely known boxing today is forbidden due to the reasoning behind its prohibition: it permits each of the contenders to inflict severe physical harm upon the other. If this reason for prohibition ceases to exist, and the purpose of practicing this sport becomes strengthening the body and gaining self-defense experience, without causing harm to oneself or others, then the prohibition is lifted. What the questioner mentioned about practicing this sport with a face guard, while the players observe Islamic limits, and its practice is purged of permitting harm to the opponent and striving not to harm him, can remove the prohibition. And if a Muslim discerns the consensus of scholars on a legal ruling, then it is obligatory for him to act upon it.