‘O Allah! Support him with the Holy Spirit!’

عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، قَالَ مَرَّ عُمَرُ فِي الْمَسْجِدِ وَحَسَّانُ يُنْشِدُ، فَقَالَ كُنْتُ أُنْشِدُ فِيهِ، وَفِيهِ مَنْ هُوَ خَيْرٌ مِنْكَ، ثُمَّ الْتَفَتَ إِلَى أَبِي هُرَيْرَةَ، فَقَالَ أَنْشُدُكَ بِاللّٰهِ، أَسَمِعْتَ رَسُولَ اللّٰهِ  صَلَّی اللّٰهُ عَلَيْهِ وَسَلَّمَ  يَقُولُ ‏”أَجِبْ عَنِّي، اَللّٰھُمَّ أَيِّدْهُ بِرُوْحِ الْقُدُسِ“‏.‏ قَالَ نَعَمْ‏.‏

Hazrat Sa‘id^ra bin Al-Musaiyab narrates, “Umar came to the mosque while Hassan was reciting a poem. (Umar disapproved of that.) On that, Hassan said, ‘I used to recite poetry in this very mosque in the presence of one (i.e. the Holy Prophet^sa) who was better than you.’ Then he turned towards Abu Hurairah and said (to him), ‘I ask you by Allah, did you hear Allah’s Messenger^sa saying (to me), ‘Retort on my behalf. O Allah! Support him (i.e. Hassan) with the Holy Spirit!’ Abu Hurairah said, ‘Yes.’”

(Sahih al-Bukhari, Kitab bad’I l-khalq, Hadith 3212)