Complex sentence: For example, members of Christian churches offer part of their income, called a tithe, and one of the five pillars of Islam, called the Zakat, is the offering a percentage of one's income.
Split into simpler sentences: For example, members of Christian churches offer part of their income, called a tithe. Likewise, one of the five pillars of Islam, called the Zakat, is the offering of a percentage of one's income.