Hadith 9
Sahl ibn Sa’d reported: The Messenger of Allah, peace and blessings be upon him, said:
اللَّهُمَّ اغْفِرْ لِقَوْمِي فَإِنَّهُمْ لا يَعْلَمُونَ
O Allah, forgive my people for they do not know.
Abu Hatim, may Allah be pleased with him, said:
يَعْنِي هَذَا الدُّعَاءُ أَنَّهُ قَالَ يَوْمَ أُحُدٍ لَمَّا شُجَّ وَجْهُهُ
This supplication was said during the battle of Uhud when they slashed his face.
Source: Ṣaḥīḥ Ibn Ḥibbān 985, Grade: Sahih