This idea is going round on the internet, but it is not true. Ibn Sina upheld the possibility of disease transmission for certain diseases, but he did not introduce the concept of quarantine. https://twitter.com/akjailani/status/1247097078460878848

among diseases he considered transmittable (amrāḍ muʿdiyya) were leprosy, scabies, smallpox and measles, pestilential fevers and ophthalmia (which could even happen by staring into a sick eye).

This happened especially in narrow places and spaces below the wind, an idea previously articulated by ar-Rāzī, who recommended people to stay away from patients or meet them in places "above the wind" in his kitāb al-manṣūrī

this is one of the articles that seems to have spread the idea, citing a book by Richard Colgan (advice to the young physician), in which the latter falsely argues Ibn Sina introduced the idea of quarantine: https://www.truth-seeker.info/jewels-of-islam/ibn-sina-an-exemplary-scientist/