ENOfficial
‘Abdallah b. ‘Amr reported God's Messenger as saying, “Any Muslim who dies on Friday or on Thursday night will be protected by God from the testing in the grave." Ahmad and Tirmidhi transmitted it, the latter saying this is a gharib tradition whose isnad is not fully connected.
Source: sunnah.com
Other translations
Arabic
وَعَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «مَا مِنْ مُسْلِمٍ يَمُوتُ يَوْمَ الْجُمُعَةِ أَوْ لَيْلَةَ الْجُمُعَةِ إِلَّا وَقَاهُ اللَّهُ فِتْنَةَ الْقَبْرِ» . رَوَاهُ أَحْمَدُ وَالتِّرْمِذِيُّ وَقَالَ: هَذَا حَدِيثٌ غَرِيبٌ وَلَيْسَ إِسْنَاده بِمُتَّصِل
sunnah.com