Sahih al-Bukhari 4936
Book 65: Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh)) · Narrated by Sahl bin Sa`d
Arabic
حَدَّثَنَا أَحْمَدُ بْنُ الْمِقْدَامِ، حَدَّثَنَا الْفُضَيْلُ بْنُ سُلَيْمَانَ، حَدَّثَنَا أَبُو حَازِمٍ، حَدَّثَنَا سَهْلُ بْنُ سَعْدٍ ـ رضى الله عنه ـ قَالَ رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ بِإِصْبَعَيْهِ هَكَذَا بِالْوُسْطَى وَالَّتِي تَلِي الإِبْهَامَ " بُعِثْتُ وَالسَّاعَةَ كَهَاتَيْنِ ".
English translation
Narrated Sahl bin Sa`d:I saw Allah's Messenger (ﷺ) pointing with his index and middle fingers, saying. "The time of my Advent and the Hour are like these two fingers
Reference: Sahih al-Bukhari 4936, Book of Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh)). English translation by Dr. Muhammad Muhsin Khan.