أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنِ الزُّهْرِيِّ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، قَالَ مَرَّ عُمَرُ بِحَسَّانَ بْنِ ثَابِتٍ وَهُوَ يُنْشِدُ فِي الْمَسْجِدِ فَلَحَظَ إِلَيْهِ فَقَالَ قَدْ أَنْشَدْتُ وَفِيهِ مَنْ هُوَ خَيْرٌ مِنْكَ ثُمَّ الْتَفَتَ إِلَى أَبِي هُرَيْرَةَ فَقَالَ أَسَمِعْتَ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ " أَجِبْ عَنِّي اللَّهُمَّ أَيِّدْهُ بِرُوحِ الْقُدُسِ " . قَالَ اللَّهُمَّ نَعَمْ .
It was narrated that Sa'eed bin Al-Musayyab said: "Umar passed by Hassan bin Thabit while he was reciting poetry in the Masjid, and glared at him. He said: 'I recited poetry when there was someone better than you in the Masjid.' Then he turned to Abu Hurairah and said: 'Did you not hear the Messenger of Allah (PBUH) when he said: "Answer back on my behalf. O Allah, help him with the Holy Spirit!'" He said: 'Yes, by Allah.'" Translation Not Available
Book Ref: Sunan An Nisai Book 8 Hadith 716
Web Ref: Sunan An Nisai Vol 1 Book 8 Hadith 717