Who would permit himself...
Who would permit himself, knowingly or unknowingly, to say that Allah, Dignity and Glory to Him, has not sent the best of His Messengers and Prophets with the best of His religions and codes, nor has He revealed unto him His best Books and Tablets, judgment and doctrines, nor has He completed His Religion for him and perfected His blessing unto him, nor has He taught him the knowledge of the past and the present, except for the sole purpose that the whole matter would end to the Imams of those sects to monopolize for their own selves?
They would then forbid all others from acquiring it from any other source, as if the Islamic faith, in its Book and Sunnah, and in all other signs and testaments, a property of their own, and that they forbade faring with it in any way contrary to their own opinions...
Were they the Prophets' heirs, or had Allah sealed through them the successors and Imams, or taught them the knowledge of the past and the present, and that He bestowed upon them what He had never bestowed upon anybody else among all human beings? No! They were just like many others, pillars and caretakers of knowledge, ministers and callers. Those who call for knowledge are far above closing its doors against others or forbidding others from reaching it.
They never curb the minds, nor confine public attention only to their own selves, nor can they seal people's hearts or make others deaf, blind, dumb, handcuffed, or chained. This can never be attributed to them except as a liar's allegation, and their own statements bear witness to ours. Let us now concentrate on the matter to which you attracted our attention: the unity of Muslims. What I see is that this matter does not depend on Shi’as forsaking their faith, nor the Sunnis forsaking their own.
Asking Shi’as to do so without asking others (Sunnis) to do likewise is to prefer without preponderance, or even to favour the less preferable. It is demanding what is beyond one's capacity as it is known from our Introduction. Yes. Unity and uniformity can be achieved if you release Ahl alBayt's sect and view it as you view any of your own sects so that the Shafi’is, Hanafis, Malikis and Hanbalis may consider the followers of Ahl alBayt just as they consider each other.
Only then can the unity of Muslims be achieved, and they will be unified in one fold.