Abu Huraira reported that 'Umar happened to pass by Hassan as he was reciting verses in the mosque. He (Hadrat 'Umar) looked towards him (meaningfully), whereupon he (gassin) said: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 Allah's Messenger (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)
قَالَ فِي حَلْقَةٍ فِيهِمْ أَبُو هُرَيْرَةَ أَنْشُدُكَ اللَّهَ يَا أَبَا هُرَيْرَةَ أَسَمِعْتَ رَسُولَ اللَّهِ صلى الله عليه وسلم. فَذَكَرَ مِثْلَهُ.
Ibn Musayyib reported that Hassan said to a circle in which there was also Abu Huraira:Abu Huraira, I adjure you by Allah (to tell) whether you-had not heard Allah's Messenger (ﷺ) saying like this
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ عَبْدِ الرَّحْمَنِ الدَّارِمِيُّ، أَخْبَرَنَا أَبُو الْيَمَانِ، أَخْبَرَنَا شُعَيْبٌ، عَنِ الزُّهْرِيِّ، أَخْبَرَنِي أَبُو سَلَمَةَ بْنُ عَبْدِ الرَّحْمَنِ، أَنَّهُ سَمِعَ حَسَّانَ بْنَ ثَابِتٍ الأَنْصَارِيَّ، يَسْتَشْهِدُ أَبَا هُرَيْرَةَ أَنْشُدُكَ اللَّهَ هَلْ سَمِعْتَ النَّبِيَّ صلى الله عليه وسلم يَقُولُ " يَا حَسَّانُ أَجِبْ عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم اللَّهُمَّ أَيِّدْهُ بِرُوحِ الْقُدُسِ ". قَالَ أَبُو هُرَيْرَةَ نَعَمْ.
Abd al-Rahman reported that he heard Hassin b. Thabit al-Ansari call Abu Huraira to bear witness by saying:I adjure you by Allah if you had not heard Allah's Apostle (ﷺ) saying: Hassin, give a reply on behalf of the Messenger of Allah. O Allah, help him with Ruh-ul-Qudus. Abu Huraira said: Yes, it is so