وَعَنْ أُبَيِّ بْنِ كَعْبٍ قَالَ: كَانَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا ذَهَبَ ثُلُثَا اللَّيْلِ قَامَ فَقَالَ: «يَا أَيُّهَا النَّاسُ اذْكُرُوا اللَّهَ اذْكُرُوا اللَّهَ جَاءَتِ الرَّاجِفَةُ تَتْبَعُهَا الرَّادِفَةُ جَاءَ الْمَوْتُ بِمَا فِيهِ جَاءَ الْمَوْتُ بِمَا فِيهِ» . رَوَاهُ التِّرْمِذِيّ
Ubayy bin Ka'b (may Allah be pleased with him) narrates: It was the practice of the Prophet (peace and blessings be upon him) that when two-thirds of the night had passed, he would stand up and say: "O people! Remember Allah, remember Allah, the earthquake is about to come, immediately after it another earthquake is about to come, and death has come with its hardships, and death has come with its hardships." Its chain is weak, narrated by al-Tirmidhi.