 The views of Muslim thinkers regarding mathematical continuum are intertwined with the position they uphold in the debate between atomism and hylomorphism about the nature of the physical world. For Avicenna there is no gap between the physical world and the realm of mathematical objects. This is so at least if we accept interpretations of Avicenna as a literalist regarding the ontology of mathematics. He believes that geometrical magnitudes are continuous in the sense that they have no actual part. Correspondingly, physical dimensions are continuous and have no actual parts. We can of course divide any continuous magnitude into smaller parts. In the physical world, there is a practical lower limit for the length of the physical dimensions which can in practice be broken down into smaller magnitudes. By contrast, in our faculty of estimation, this limit disappears, and all magnitudes are potentially infinitely divisible. Despite this practical difference, theoretically speaking, there is no difference between the structure of geometrical lines and physical dimensions. As a result, geometrical continuity implies that physical atomism is false. Indeed, Avicenna appeals to mathematical continuity to reject physical atomism (Avicenna [Ph2]: chap. III.3–5; Lettinck 1999; Dhanani 2015; McGinnis 2019: sec. 3).