Abu Huraira, I adjure you by Allah (to tell) whether you-had not heard Allah's Messenger (ﷺ) saying like this.
Sahih Muslim Book 44, Hadith 215
← Previous Hadith 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).

Sahih Muslim Book 44, Hadith 214 Next Hadith → 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.

Sahih Muslim Book 44, Hadith 216