The discourse of the Holy Quran navigates the audience through a network of mental spaces to convey its teachings. Gilles Fauconnier's Mental Spaces Theory views language as a mental construct and an interconnected network of spaces formed during discourse. This study, adopting a descriptive-analytical method and applying the fundamental concepts of this theory (space-builders, trigger, target, pragmatic connector, and access principle), analyzes the pivotal verses on hijab (al-Aḥzāb: 53, 59; al-Nūr: 30-31). The selection of these verses is based on two criteria: the use of the key terms ḥijāb, jilbāb, and khimār, and the use of imperative speech acts related to covering. The findings indicate that the Quran, through space-builders such as min warā'i ḥijāb, yudnīna, yaghūḍḍū, khumur, and juyūb, moves the audience beyond the tangible domain of body and clothing, and ḥijāb, jilbāb, and khimār, functioning as triggers, guide the mind toward objectives such as purity of heart, security, and preservation of boundaries. The study concludes that hijab in Quranic discourse is not merely a jurisprudential ruling but a three-tiered cognitive system grounded in three macro-spaces: "purity of heart and soul," "social security and immunity," and "sanctity-based boundary control." This analysis demonstrates that integrating discourse analysis with Mental Spaces Theory offers an effective tool for decoding the hidden semantic layers of the Quran.