Sahih al-Bukhari 6556
Book 81: To make the Heart Tender (Ar-Riqaq)
Arabic
قَالَ أَبِي فَحَدَّثْتُ النُّعْمَانَ بْنَ أَبِي عَيَّاشٍ، فَقَالَ أَشْهَدُ لَسَمِعْتُ أَبَا سَعِيدٍ يُحَدِّثُ وَيَزِيدُ فِيهِ " كَمَا تَرَاءَوْنَ الْكَوْكَبَ الْغَارِبَ فِي الأُفُقِ الشَّرْقِيِّ وَالْغَرْبِيِّ ".
English translation
Abu Sa`id added:"As you see a glittering star remaining in the eastern horizon and the western horizon
Reference: Sahih al-Bukhari 6556, Book of To make the Heart Tender (Ar-Riqaq). English translation by Dr. Muhammad Muhsin Khan.