That the Prophet ﷺ said to her, "Gabriel sends Salam (greetings) to you." She replied, "Wa 'alaihi-s- Salam Wa Rahmatu-l-lah." (Peace and Allah's Mercy be on him).  

أَنَّ النَّبِيَّ ﷺ قَالَ لَهَا إِنَّ جِبْرِيلَ يُقْرِئُكِ السَّلاَمَ قَالَتْ وَعَلَيْهِ السَّلاَمُ وَرَحْمَةُ اللَّهِ