Complex sentence: It is believed that when Shaka was passing through the area, he refused to drink from a local river claiming it had the taste of "umlaza", from that incident, the area has infamously been called Umlazi.
Split into simpler sentences: It is believed that when Shaka was passing through the area, he refused to drink from a local river claiming it had the taste of "umlaza". From that incident, the area has infamously been called Umlazi.