I used to recite (verses) when one better than you (the Holy Prophet) had been present (here). He then looked towards Abu Huraira and said to him: I adjure you by Allah (to tell) if you had not heard Messenger of Allah ﷺ as saying: (Hassan), give a reply on my behalf; Allah I help him with Ruh-ul-Qudus. He (Abu Huraira) said: By Allah, it is so (i. e. the Prophet actually said these words). (Using translation from Muslim 2485a)   

مَرَّ عُمَرُ بِحَسَّانَ وَهُوَ يُنْشِدُ فِي الْمَسْجِدِ فَلَحَظَ إِلَيْهِ قَالَ كُنْتُ أُنْشِدُ وَفِيهِ مَنْ هُوَ خَيْرٌ مِنْكَ ثُمَّ الْتَفَتَ إِلَى أَبِي هُرَيْرَةَ فَقَالَ سَمِعْتَ رَسُولَ اللهِ ﷺ يَقُولُ أَجِبْ عَنِّي اللهُمَّ أَيِّدْهُ بِرُوحِ الْقُدُسِ؟ قَالَ نَعَمْ  

[Machine] Umar passed by Hassaan while he was reciting poetry in the mosque. Umar asked, "Are you reciting poetry in the mosque of the Messenger of Allah ﷺ?" Hassaan replied, "I used to recite poetry in it, and there were those who were better than me. Or I used to recite poetry in it, and there were those who were better than me."  

مَرَّ عُمَرُ عَلَى حَسَّانَ وَهُوَ يُنْشِدُ الشِّعْرَ فِي الْمَسْجِدِ فَقَالَ فِي مَسْجِدِ رَسُولِ اللهِ ﷺ تُنْشِدُ الشِّعْرَ؟ قَالَ قَدْ كُنْتُ أُنْشِدُ وَفِيهِ مَنْ هُوَ خَيْرٌ مِنْكَ أَوْ كُنْتُ أُنْشِدُ فِيهِ وَفِيهِ مَنْ هُوَ خَيْرٌ مِنْكَ  

[Machine] Umar passed by Hassan while he was reciting in the mosque, so Umar asked him, "What are you reciting?" Hassan replied, "I was reciting about who is better than you." Umar then left, knowing that he was seeking the approval of the Prophet Muhammad ﷺ .  

مَرَّ عُمَرُ عَلَى حَسَّانَ وَهُوَ يُنْشِدُ فِي الْمَسْجِدِ فَقَالَ مَهْ قَالَ لَهُ حَسَّانُ قَدْ كُنْتُ أُنْشِدُ مَنْ هُوَ خَيْرٌ مِنْكَ قَالَ فَانْصَرَفَ عُمَرُ وَهُوَ يَعْرِفُ أَنَّهُ يُرِيدُ رَسُولَ اللهِ ﷺ  

[Machine] Hassan, by Allah, I have indeed praised in him, someone who is better than you, and I feared that he would throw it at the Messenger of Allah ﷺ, so he responded and left it.  

حَسَّانُ وَاللهِ لَقَدْ أَنْشَدْتُ فِيهِ مَنْ هُوَ خَيْرٌ مِنْكَ فَخَشِيَ أَنْ يَرْمِيَهُ بِرَسُولِ اللهِ ﷺ فَجَازَ وَتَرَكَهُ