وَعَنْ أَمْ سَلَمَةَ رَضِيَ اَللَّهُ عَنْهَا
قَالَتْ: «صَلَّى رَسُولُ اَللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ اَلْعَصْرَ، ثُمَّ دَخَلَ بَيْتِي، فَصَلَّى رَكْعَتَيْنِ، فَسَأَلْتُهُ، فَقَالَ: «شُغِلْتُ عَنْ رَكْعَتَيْنِ بَعْدَ اَلظُّهْرِ، فَصَلَّيْتُهُمَا اَلْآنَ«, قُلْتُ: أَفَنَقْضِيهِمَا إِذَا فَاتَتْنَا? قَالَ: «لَا»
The Messenger of Allah (sallallahu alayhi wa sallam) came to my house after offering Asr prayer and offered two Raka, then I asked him about that and he replied, “I was kept busy (and failed to pray) the two (Sunnah) Raka after Zuhr prayer, so I offered them now.” I asked him, “Should we offer them if we miss them?” He (sallallahu alayhi wa sallam) replied, “No.”.
Bulugh al-Maram 209, Book 2, The Book of Prayer, Hadith 30. 1 min read