In one of the holy Battles a finger of Messenger of Allah ﷺ (got wounded and) bled. He said, "You are just a finger that bled, and what you got is in Allah's Cause." (Using translation from Bukhārī 2802)
أُدْمِيَ إِصْبَعُ النَّبِيِّ ﷺ فِي بَعْضِ الْمَغَازِي فَقَالَ «هَلْ أَنْتَ إِلَّا إِصْبَعٌ دَمِيتَ وَفِي سَبِيلِ اللهِ مَا لَقِيتَ»