"I did not hear the Prophet ﷺ mentioning both of his parents (that is including both in the saying "May my father and mother be ransomed for you") for anyone other than Sa'd bin Abi Waqqas."  

سَمِعْتُ النَّبِيَّ ﷺ جَمَعَ أَبَوَيْهِ لأَحَدٍ غَيْرَ سَعْدِ بْنِ أَبِي وَقَّاصٍ  

"The Messenger of Allah ﷺ did not mention both of his parents for anyone except Sa'd bin Abi Waqqas. On the Day of Uhud he said: 'Shoot, may my father and mother be ransomed for you.' And he said to him: 'Shoot! O young man.'"  

عَلِيٌّ مَا جَمَعَ رَسُولُ اللَّهِ ﷺ أَبَاهُ وَأُمَّهُ لأَحَدٍ إِلاَّ لِسَعْدِ بْنِ أَبِي وَقَّاصٍ قَالَ لَهُ يَوْمَ أُحُدٍ ارْمِ فِدَاكَ أَبِي وَأُمِّي وَقَالَ لَهُ ارْمِ أَيُّهَا الْغُلاَمُ الْحَزَوَّرُ وَفِي الْبَابِ عَنِ الزُّبَيْرِ وَجَابِرٍ  

"The Messenger of Allah ﷺ mentioned both of his parents to me on the Day of Uhud."  

جَمَعَ لِي رَسُولُ اللَّهِ ﷺ أَبَوَيْهِ يَوْمَ أُحُدٍ قَالَ ارْمِ فِدَاكَ أَبِي وَأُمِّي حَدَّثَنَا بِذَلِكَ قُتَيْبَةُ حَدَّثَنَا اللَّيْثُ بْنُ سَعْدٍ وَعَبْدُ الْعَزِيزِ بْنُ مُحَمَّدٍ عَنْ يَحْيَى بْنِ سَعِيدٍ عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ عَنْ سَعْدِ بْنِ أَبِي وَقَّاصٍ قَالَ جَمَعَ لِي رَسُولُ اللَّهِ ﷺ أَبَوَيْهِ يَوْمَ أُحُدٍ وَهَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ وَكِلاَ الْحَدِيثَيْنِ صَحِيحٌ