Usul al-fiqh is the study of the principles and methodologies used in Islamic jurisprudence. It provides a framework for deriving legal rulings from the primary sources of Islamic law, which are the Qur'an and Sunnah. Scholars analyze these texts to understand their meanings and implications, ensuring that legal decisions align with Islamic teachings. The discipline also addresses secondary sources, such as ijma (consensus) and qiyas (analogy), which help scholars apply Islamic principles to new situations. By establishing clear guidelines, Usul al-fiqh ensures that Islamic law remains relevant and adaptable to changing circumstances while maintaining its foundational values.