Ijma refers to the "Consensus" or unanimous agreement of Islamic scholars (Mujtahideen) on a particular religious issue after the death of the Prophet (PBUH). It is considered the third primary source of Islamic law, after the Quran and the Sunnah. The authority of Ijma is based on the Prophet's statement: "My Ummah will never agree upon an error." When Ijma is reached on a point of law, it becomes a binding authority for the community. It serves as a vital tool for maintaining the unity and consistency of the faith, preventing radical or eccentric interpretations from taking root. Ijma is a powerful source because it reflects the collective reasoning of the community of scholars. The Prophet's guarantee that the Ummah would not agree on error provides certainty that what the scholars have unanimously agreed upon is correct. There are different types of Ijma. Ijma al-Sarih (explicit consensus) occurs when scholars explicitly agree on an issue. Ijma al-Sukuti (tacit consensus) occurs when some scholars give an opinion and others remain silent, which is considered a weaker form of consensus. Ijma operates primarily on issues that are not explicitly addressed in the Quran and Sunnah. For example, the compilation of the Quran into a single book, the formalization of Taraweeh prayers in congregation, and the codification of Islamic law are all based on Ijma. The conditions for Ijma are debated among scholars. Some hold that consensus of all scholars in a given era is required; others hold that consensus of the scholars of Medina or the companions is sufficient. In practice, Ijma is most often cited for issues that have been settled since the early centuries of Islam. In modern times, achieving consensus on new issues is difficult due to the diversity of scholars and schools. However, the principle remains that when scholars do agree, their consensus is binding. Ijma ensures that Islam is not subject to individual whims. It provides a mechanism for collective decision-making and prevents the fragmentation that could result from multiple conflicting opinions. It also preserves the unity of the Ummah by establishing settled positions on key issues. In a world where Muslims often hold diverse opinions, the principle of Ijma reminds that unity is possible, that the community has a collective wisdom, and that consensus on foundational issues is a mercy from Allah. It calls Muslims to prioritize unity over division and to trust that the Ummah, guided by its scholars, will not collectively err.