Volume 1, Book 8, Number 444:
Narrated Hassan bin Thabit Al-Ansari:
I asked Abu Huraira “By Allah! Tell me the truth whether you heard the Prophet saying, ‘O Hassan!
Reply on behalf of Allah’s Apostle. O Allah! Help him with the Holy Spirit.” Abu Huraira said, “Yes . ”
Volume 1 – 116 / 1700
SAHIH BUKHARI VOLUME 1 > BOOK 8: PRAYERS (SALAT)