What exactly does "Bayyinah" mean in the Quran?

Question

According to Quran translations, it means "The clear evidence" or "The clear proof". But I'm still confused. Does Bayyinah mean a proof that is so clear that it cannot be refuted? Or does it refer to a sign that is clear but it can still be refuted?According to Surah Bayyinah, Allah refers to "A messenger reciting purified pages" as Bayyinah (the clear proof). How is this a clear proof if so many non-muslims still doubt Muhammad's (pbuh) prophethood?

Answer 1

Message, Quran, prophet,