Sahih Muslim , Book 54, Hadith 171 (In-Book) ⓘ
Anas reported Allah's Messenger as saying: I and the Last Hour have been sent like this and (he while doing it) joined the forefinger with the middle finger.
وَحَدَّثَنَا أَبُو غَسَّانَ الْمِسْمَعِيُّ، حَدَّثَنَا مُعْتَمِرٌ، عَنْ أَبِيهِ، عَنْ مَعْبَدٍ، عَنْ أَنَسٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " بُعِثْتُ أَنَا وَالسَّاعَةُ كَهَاتَيْنِ " . قَالَ وَضَمَّ السَّبَّابَةَ وَالْوُسْطَى .
also referenced under: Hadith 2951 (Reference) & Book 41, Hadith 7049 (USC-MSA)