Sunnah: The teachings, actions, and sayings of the Prophet Muhammad, which serve as a model for Islamic behavior and are considered the second most important source of guidance after the Quran.
Hadith: The collection of reports describing the words, actions, and approvals of the Prophet Muhammad, which are used to interpret the Quran and provide guidance for daily life.
Shariah: The religious law derived from the religious precepts of Islam, particularly the Quran and the Hadith, which regulates public and private behavior as well as personal hygiene and morality.