Inˇs’Allah introduces a significant proportion of future tense utterances in Tunisian Arabic. This sequence has a multitude of secularized uses, resulting from the pragmaticalization of its initial religious meaning. The objective of this article is, on the one hand, to identify the origin of the expression and to restitute the pragmaticalization mechanism it has undergone, and, on the other hand, to determine its distributional properties and its main semantic-pragmatic values in context. The identification of the types of use and their classification is based on the exhaustive exploration of an authentic oral corpus of about 450 occurrences. Their study allows the recognition of a multitude of distinct contextual uses. These uses will be described and illustrated, before being linked by a hypothesis of anthropological explanation: the use of this sequence would reflect a conception of the future as a magical time not entirely domesticated.