A saying widely repeated in speech may survive through one isnad, through several isnads, or in some cases through no established isnad at all. Ordinary fame must not be equated with technical multiplicity of routes.
«فَيَشْمَلُ مَا لَهُ إِسْنَادٌ وَاحِدٌ فَصَاعِدًا، بَلْ مَا لَا يُوجَدُ لَهُ إِسْنَادٌ أَصْلًا»
This broader usage may include a saying with one or more chains, or even one for which no chain exists.
Application: If a familiar phrase is attributed to the Prophet ﷺ, its source and attribution must be checked first. Repetition in speeches, books, or popular discourse does not establish that the Prophet actually said it.