WHEN TRIALS DESCEND H 88 "Hasten to do good in fear of a time when trials descend like the darkness of night. When a person will start the day believing but at its end disbelieve, or go to bed believing and arise disbelieving in the morning. He will be ready to sell his belief for a worldly gain." R 88 Muslim with a chain up to Abu Hurairah who related that the Prophet, praise and peace be upon him, said this.
87- وأما الأحاديث : فالأولُ : عن أبي هريرة رضي الله عنه : أن رَسُول الله صلى الله عليه وآله وسلم ، قَالَ : "بَادِرُوا بِالأعْمَال فتناً كقطَعِ اللَّيْلِ المُظْلِمِ ، يُصْبحُ الرَّجُلُ مُؤْمِناً وَيُمْسِي كَافِراً ، وَيُمْسِي مُؤمِناً ويُصبحُ كَافِراً ، يَبيعُ دِينَهُ بعَرَضٍ مِنَ الدُّنيا" رواه مسلم .