What is the virtue of one who dies on a Friday due to a heart operation, and is he considered a martyr if he dies with a wound?

Al-Tirmidhi narrated a hadith from the Prophet Muhammad ﷺ: "No Muslim dies on Friday or the night of Friday except that Allah protects him from the trial of the grave." This hadith is categorized as "gharib" (uncommon) and its chain of narration is "not continuous." Al-Hafiz Ibn Hajar declared it weak, while Al-Albani stated it is "hasan" (good) or "sahih" (authentic) due to its multiple طرق (chains of narration).

If the hadith is authentic, then it indicates a virtue for one who dies on Friday and is evidence of a good ending for them. As for someone who dies injured, there is no explicit text to prove that they are a martyr.