From Sahih Bukhari (Hadith 453):
Narrated Hassan bin Thabit Al-Ansari:I asked Abu Huraira "By Allah! Tell me the truth whether you heard the Prophet (ﷺ) saying, 'O Hassan! Reply on behalf of Allah's Messenger (ﷺ). O Allah! Help him with the Holy Spirit." Abu Huraira said, "Yes
Reference: Bukhari 453