Farsideology: Mormonism & Islam
From WikiIslam
The Difference Between Mormonism and Islam
Mormonism can change. 
Change 1 - In 1890, the Mormon Church hierarchy received a revelation from God that suspended the practice of polygamy.
Change 2 – In 1978, the Mormon Church hierarchy received a new revelation from God which abolished racism within the church. Male black-Americans are now eligible for the priesthood. (sources)
Islam cannot change. 
As of today, no revelation has been sent by Allah to mankind prohibiting the evil institution of slavery. Allah prefers regulation over abolition. Since Muhammad was the final prophet to mankind according to Islam, no future revelation will come from Allah expressly forbidding the evil institution of slavery (or the discriminatory institution of polygamy).
From the Farside 
