You shall make yourself tassels on the four corners of the garment with which you cover yourself.
#deuteronomy 22:12 #tzitzit
Is the "four corners" of this verse literal? I don't think so. It could mean that tzitziyot (the Hebrew word for these tassels, plural) must be visible from all directions or "all around", just as the "four corners" of the earth isn't literal.
Check out these two articles for more information about why and how to wear these tassels: https://www.americantorah.com/....2019/10/23/tzitzit-p