Jabir reported: I heard the Messenger of Allah, peace and blessings be upon him, say three days before his death, “None of you should die without expecting good from Allah.”

Source: Sahih Muslim 2877

Grade: Sahih (authentic) according to Muslim

عَنْ جَابِرٍ قَالَ سَمِعْتُ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَبْلَ وَفَاتِهِ بِثَلَاثٍ يَقُولُ لَا يَمُوتَنَّ أَحَدُكُمْ إِلَّا وَهُوَ يُحْسِنُ بِاللَّهِ الظَّنَّ

2877 صحيح مسلم كتاب الجنة وصفة نعيمها وأهلها باب الأمر بحسن الظن بالله تعالى عند الموت

http://dailyhadith.abuaminaelias.com/2012/04/22/hadith-on-hope-none-of-you-should-die-without-expecting-good-from-allah/