﴿ يَوْمَ يُنفَخُ فِى ٱلصُّورِ فَتَأْتُونَ أَفْوَاجًۭا ﴾

“the Day when the trumpet [of resurrection] is sounded and you all come forward in multitudes;”

the day the Trumpet the Horn is blown yawma yunfakhu fī’l-sūri is either a substitution for or an explication of yawma’l-fasli ‘the Day of Decision’ the blower being Isrāfīl and you come forth from your graves to the site of the Resurrection in droves in diverse groups