It is between Hindus and Muslims
As far as the basic beliefs of Islam are concerned, there is no fundamental division among the Muslims. Anyhow, the jurists have given different opinions about various topics. In this regards, the Muslims are divided into more than 80 sects.
Muslims and Hindus .
The Mughal Empire had to keep peace between Hindus and Muslims. This was a significant challenge for the empire due to the religious diversity of the population and the potential for conflict between the two communities.
Religious tension refers to problems between two religious groups. An example would be the Muslims, Jews and Hindus fighting in the Middle East.
The Crusades were a series of religious wars fought between Christians and Muslims for control of holy sites in the Eastern Mediterranean.
The Shiah Muslims are a division of Muslims, something like protestant and Catholics, both are Christians.
The Crusades for starters. The Crusades were a religious was between the Christians and the Muslims...with the Jews caught in the middle.
Hinduism and Islam. When India regained its independence from the British Empire in 1947, the schism between Muslims and Hindus impelled the division of the country into separate states, Pakistan and India. (East Pakistan, once part of Pakistan, later became the independent state of Bangladesh.)
The Crusades, a series of religious wars between Christians and Muslims, officially ended in 1291 when the Muslims captured the last Christian stronghold in the Holy Land. However, tensions and conflicts between Christians and Muslims have persisted in various forms throughout history.
Who should own Jerusalem & other places in the Holy Land.
Religious and ethnic differences between Hindus and Muslims