Is the rust mentioned in the noble Hadith corporeal or abstract, and how is the abstract represented by the corporeal?

The aforementioned Hadith is weak, and the rust mentioned in it is spiritual. Its polishing occurs through remembrance (dhikr), recitation of the Qur'an, and remembrance of death. This is supported by the Hadith narrated by the compilers of the Sunan from Abu Hurayrah concerning the black spot that is imprinted on the heart by sin, which is the "Raan" mentioned by Allah the Almighty. The use of tangible examples for intangible concepts is frequent in the Qur'an and Sunnah to facilitate understanding of meanings.