Hadith on Trials: Encouragement to perform good deeds before trials come that turn believers into disbelievers

Abu Huraira reported: The Messenger of Allah, peace be upon him, said, “Be prompt in performing good deeds before there comes a trial like the darkness of night, during which a man would wake up a believer but would be a disbeliever by evening, or he would be a believer in the evening but would be a disbeliever by morning, selling his religion for some goods in the world.”
[Sahih Muslim, Book 1, Number 213]

عَنْ أَبِي هُرَيْرَةَ  أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ بَادِرُوا بِالْأَعْمَالِ فِتَنًا كَقِطَعِ اللَّيْلِ الْمُظْلِمِ يُصْبِحُ الرَّجُلُ مُؤْمِنًا وَيُمْسِي كَافِرًا أَوْ يُمْسِي مُؤْمِنًا وَيُصْبِحُ كَافِرًا يَبِيعُ دِينَهُ بِعَرَضٍ مِنْ الدُّنْيَا

صحيح مسلم كتاب الإيمان باب الحث على المبادرة بالأعمال قبل تظاهر الفتن