The Book of Prayer - Friday
7/14. Chapter:
Greeting (prayers upon entering the masjid) while the Imam is preaching
Sahih Muslim
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، وَيَعْقُوبُ الدَّوْرَقِيُّ، عَنِ ابْنِ عُلَيَّةَ، عَنْ أَيُّوبَ، عَنْ عَمْرٍو، عَنْ جَابِرٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم كَمَا قَالَ حَمَّادٌ وَلَمْ يَذْكُرِ الرَّكْعَتَيْنِ .
This hadith is narrated by Jabir through another chain of transmitters but Hammad (one of the narrators) made no mention of the two rak'ahs.
Reference : Sahih Muslim 875bIn-book reference : Book 7, Hadith 69USC-MSA web (English) reference : Book 4, Hadith 1898