I and the Last Hour have been sent like this and (he while doing it) joined the forefinger with the middle finger.
Sahih Muslim Book 54, Hadith 169
← Previous Hadith Anas reported Allah's Apostle (ﷺ) as saying like this, but he narrated it through another chain of transmitters.

Sahih Muslim Book 54, Hadith 168 Next Hadith → If he lives he would not grow very old that he would find your Last Hour coming to you (he would see you dying).

Sahih Muslim Book 54, Hadith 170