Sahih al-Bukhari 4057
Sahih al-Bukhari · Book 64: Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi) · “…but Allah was their Wali.”
Narrated Ibn Al Musaiyab:
حَدَّثَنَا قُتَيْبَةُ ، حَدَّثَنَا لَيْثٌ ، عَنْ يَحْيَى ، عَنِ ابْنِ الْمُسَيَّبِ ، أَنَّهُ قَالَ قَالَ سَعْدُ بْنُ أَبِي وَقَّاصٍ ـ رضى الله عنه ـ لَقَدْ جَمَعَ لِي رَسُولُ اللَّهِ صلى الله عليه وسلم يَوْمَ أُحُدٍ أَبَوَيْهِ كِلَيْهِمَا. يُرِيدُ حِينَ قَالَ " فِدَاكَ أَبِي وَأُمِّي ". وَهُوَ يُقَاتِلُ.
Sa`d bin Abi Waqqas said, "Allah's Messenger (ﷺ) mentioned both his father and mother for me on the day of the battle of Uhud." He meant when the Prophet (ﷺ) said (to Sa`d) while the latter was fighting. "Let my father and mother be sacrificed for you!"