While the Prophet ﷺ was walking, a stone hit his foot and stumbled and his toe was injured. He then (quoting a poetic verse) said, "You are not more than a toe which has been bathed in blood in Allah's Cause." (Using translation from Bukhārī 6146)
سَمِعْتُ جُنْدُبًا يَقُولُ بَيْنَمَا النَّبِيُّ ﷺ يَمْشِي إِذْ أَصَابَهُ حَجَرٌ فَعَثَرَ فَدُمِيَتْ إِصْبَعُهُ فَقَالَ «هَلْ أَنْتِ إِلَّا إِصْبَعٌ دُمِيتِ وَفِي سَبِيلِ اللهِ مَا لَقِيتِ»