Bid'ah refers to innovation in religious practices that deviate from the established teachings of Islam. It encompasses actions or beliefs that were not practiced or endorsed by the Prophet Muhammad or his companions. Scholars often categorize bid'ah into two types: good (which may enhance worship) and bad (which contradicts core beliefs). The concept of bid'ah is significant in Islamic theology as it raises questions about the authenticity of religious practices. Many Muslims strive to adhere strictly to the teachings of the Qur'an and Hadith to avoid falling into bid'ah, ensuring their worship remains aligned with traditional practices.