"My father narrated to me from his grandfather, Al-Harith bin 'Amr that he met the Messenger of Allah during the Farewell Pilgrimage and said: 'May my father and mother be sacrificed for you! O Messenger of Allah; pray for forgiveness for me.' He said: 'May Allah forgive you (plural).' He was atop his slit-eared camel and I came around to the other side"' and he quoted the Hadith.
أَنَّهُ لَقِيَ رَسُولَ اللَّهِ ﷺ فِي حَجَّةِ الْوَدَاعِ فَقُلْتُ بِأَبِي أَنْتَ يَا رَسُولَ اللَّهِ وَأُمِّي اسْتَغْفِرْ لِي فَقَالَ غَفَرَ اللَّهُ لَكُمْ وَهُوَ عَلَى نَاقَتِهِ الْعَضْبَاءِ ثُمَّ اسْتَدَرْتُ مِنَ الشِّقِّ الآخَرِ وَسَاقَ الْحَدِيثَ