The meanings of the terms Walī and Mawlā have long been a subject of debate among Islamic scholars for the purpose of understanding narrations concerning the succession of Amīr al-Mu’minīn (a). The two prevailing perspectives in this regard are: the "verbal homonymy" (ishti’rāk lafzī) of this term between several meanings, and its "conceptual sharedness" (ishti’rāk ma‘nawī) in the sense of "primacy" (awlawiyyah). The consequence of both views is that establishing the specific meaning of these terms requires the presentation of diverting (sārifah) or determining (mu‘ayyinah) contexts (qarā’in). The word Walī and its cognates appear more than two hundred times in the Qur’an and were frequently employed in the legal and non-legal traditions of the Messenger of Allah (s). By examining the Qur’anic verses and Prophetic narrations, alongside the various definitions of Haqīqah Shar‘iyyah (legal technical meaning), one can argue that the term Walī attained the status of Haqīqah Shar‘iyyah specifically in the sense of "Primacy in Disposal" (awlawiyyah fi al-tasarruf). If this is substantiated, the Shi‘a would no longer need to provide external context to establish this meaning in the evidences for the Imamate of Amīr al-Mu’minīn (a); rather, any claim that the Lawgiver (al-Shāri‘) used this term in a sense other than its legal technical meaning would require a diverting context for proof. This study aims to demonstrate that the word Walī is a Haqīqah Shar‘iyyah by considering the definitions of this concept—particularly as stated in Sunni works—and by analyzing the usage of these terms in Qur’anic verses and the opinions of exegetes regarding these applications.