What is the ruling on uttering a noble Prophetic Hadith with an unintended mispronunciation?

An error in reciting a Hadith is forgivable, based on the Almighty's saying: "And there is no blame upon you for that in which you have erred, but [only for] what your hearts intended," and on the Hadith: "Indeed, Allah has pardoned for my Ummah their mistakes, their forgetfulness, and what they are coerced into." However, intentionally making an error in its recitation is forbidden, because it is attributing to the Prophet, peace and blessings be upon him, something he did not say. It has been authentically reported from him that he said: "Whoever attributes to me what I have not said, let him prepare his seat in Hellfire."