Complex sentence: Similarly, in Judaism a nonobservant Jew is still a Jew, and a Muslim who does not fulfill the ritual obligations of, for instance, saying the five daily prayers, does not thereby cease to be a Muslim.
Split into simpler sentences: Similarly, in Judaism a nonobservant Jew is still a Jew. And a Muslim who does not fulfill the ritual obligations of, for instance, saying the five daily prayers, does not thereby cease to be a Muslim.