The Book of Manners and Etiquette
38/7. Chapter:
Seeking Permission To Enter A House
Sahih Muslim
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، وَابْنُ أَبِي عُمَرَ، قَالاَ حَدَّثَنَا سُفْيَانُ، عَنْ يَزِيدَ بْنِ خُصَيْفَةَ، بِهَذَا الإِسْنَادِ . وَزَادَ ابْنُ أَبِي عُمَرَ فِي حَدِيثِهِ قَالَ أَبُو سَعِيدٍ فَقُمْتُ مَعَهُ فَذَهَبْتُ إِلَى عُمَرَ فَشَهِدْتُ .
This hadith has been narrated on the authority of Yazid b. Khusaifa with the same chain of transmitters but with this addition: Abu Sa'id said: So I stood up, and went to 'Umar and gave witness (to what Abu Musa had said).
Reference : Sahih Muslim 2153bIn-book reference : Book 38, Hadith 42USC-MSA web (English) reference : Book 25, Hadith 5355