Jundub bin Sufyaan (may Allah be pleased with him) relates:
"Once a stone hit the Mubaarak fingers of Messenger of Allah ﷺ and injured them, they became covered in blood. Messenger of Allah ﷺ thereupon recited this couplet: 'You are but a finger, no damage has overcome you, besides covering you in blood. This is not fruitless, for reward has been obtained in the path of Allah'".

حَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، قَالَ: حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ، قَالَ: حَدَّثَنَا شُعْبَةُ، عَنِ الأَسْوَدِ بْنِ قَيْسٍ، عَنْ جُنْدُبِ بْنِ سُفْيَانَ الْبَجَلِيِّ، قَالَ: أَصَابَ حَجَرٌ أُصْبُعَ رَسُولِ اللهِ ﷺ فَدَمِيَتْ، فَقَالَ: هَلْ أَنْتِ إِلا أُصْبُعٌ دَمِيتِ وَفِي سَبِيلِ اللهِ مَا لَقِيتِ.