Sahih al-Bukhari, Hadith 3725 ⓘ
Narrated Sa`d: On the day of the battle of Uhud the Prophet mentioned for me both his parents (i.e. saying, "Let my parents be sacrificed for you.").
حَدَّثَنِي مُحَمَّدُ بْنُ الْمُثَنَّى، حَدَّثَنَا عَبْدُ الْوَهَّابِ، قَالَ سَمِعْتُ يَحْيَى، قَالَ سَمِعْتُ سَعِيدَ بْنَ الْمُسَيَّبِ، قَالَ سَمِعْتُ سَعْدًا، يَقُولُ جَمَعَ لِي النَّبِيُّ صلى الله عليه وسلم أَبَوَيْهِ يَوْمَ أُحُدٍ.
also referenced under: Book 62, Hadith 73 (In-Book) & Volume 5, Book 57, Hadith 71 (USC-MSA)