question #1 Sahih Muslim 824a, Book 6, Hadith 344 : What is the significance of adhering to the original recitation of the Quran as taught by the Prophet Muhammad (ﷺ)?

Is there anyone among you who recites according to the recitation of Abdullah? I said: Yes, it is I. He again said: How did you hear ‘Abdullah reciting this verse: (wa’l-lail-i-idha yaghsha = when the night covers)? He (‘Alqama) said: I heard him reciting it (like this) (wa’l-lail-i-idha yaghsha) wa-dhakar wal untha = when the night covers and the males and the females). Upon this he said: By Allah, I heard the Messenger of Allah (ﷺ) reciting in this way, but they (the Muslims of Syria) desire us to recite: (wa ma khalaqa), but I do not yield to their desire.