Jami` at-Tirmidhi 2198
جامع الترمذي#2198Sahihحَدَّثَنَا صَالِحُ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا جَعْفَرُ بْنُ سُلَيْمَانَ، عَنْ هِشَامٍ، عَنِ الْحَسَنِ، قَالَ كَانَ يَقُولُ فِي هَذَا الْحَدِيثِ " يُصْبِحُ الرَّجُلُ مُؤْمِنًا وَيُمْسِي كَافِرًا وَيُمْسِي مُؤْمِنًا وَيُصْبِحُ كَافِرًا " . قَالَ يُصْبِحُ الرَّجُلُ مُحَرِّمًا لِدَمِ أَخِيهِ وَعِرْضِهِ وَمَالِهِ وَيُمْسِي مُسْتَحِلاًّ لَهُ وَيُمْسِي مُحَرِّمًا لِدَمِ أَخِيهِ وَعِرْضِهِ وَمَالِهِ وَيُصْبِحُ مُسْتَحِلاًّ لَهُ .
Hisham narrated that Al-Hasan would say about the Hadith:" Morning will come upon a man as a believer, who will be a disbeliever in the evening, and evening will come upon a believer, who will be a disbeliever in the morning" - he said: "Morning would come[upon a man] while his brother's blood, honor and wealth was sacred, and when evening would come, he would consider it lawful for him. And evening would come while his brother's blood, honor and wealth was sacred, and when morning would come, he would consider it lawful for him
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 33:41