salam good logic
it is not “hadith based”
i am translating the word literaly as i understand it
i understand the word means “touch” so that is exactly how i will understand it The God willing
and i will not risk it just to be “different” and start intepreting where there is no need to
(the way i read the Quran is that i take the Book literally and do not interpret)
unless my arabic is bad ... i think the word means “touch” ... so why not understand it as “touch”?? why intepret?? touch means touch
and “clean” i believe means wudu as we are told to do wudu before “salat” ... and i think “salat” is physical prayer and reading/studying the Quran from sunset all the way to dawn + a middle prayer on day of gathering
what do we do in “salat”? i believe in salat we engage in prostration and sujud to pray and implore for help, forgiveness, ... and to glorify The Creator and we also read from the Quran ...
so by deduction (not interpretation) i believe “clean” means wudu
so i do wudu before i touch or read from the Quran

peace