Language:
كتاب أحاديث الأنبياء
60  
Prophets
(8)
Chapter: The Statement of Allah Taa'la: "...And Allah did take Ibrahim as a Khalil."
(8)
بَابُ قَوْلِ اللَّهِ تَعَالَى: {وَاتَّخَذَ اللَّهُ إِبْرَاهِيمَ خَلِيلاً}
Sahih al-Bukhari 3354

Narrated Samura:

Allah's Messenger (ﷺ) said, "Two persons came to me at night (in dream) (and took me along with them). We passed by a tall man who was so tall that I was not able to see his head and that person was Abraham."

حَدَّثَنَا مُؤَمَّلٌ، حَدَّثَنَا إِسْمَاعِيلُ، حَدَّثَنَا عَوْفٌ، حَدَّثَنَا أَبُو رَجَاءٍ، حَدَّثَنَا سَمُرَةُ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏ "‏ أَتَانِي اللَّيْلَةَ آتِيَانِ، فَأَتَيْنَا عَلَى رَجُلٍ طَوِيلٍ، لاَ أَكَادُ أَرَى رَأْسَهُ طُولاً، وَإِنَّهُ إِبْرَاهِيمُ صلى الله عليه وسلم ‏"‏‏.‏
Reference : Sahih al-Bukhari 3354
In-book reference : Book 60, Hadith 29
USC-MSA web (English) reference : Vol. 4, Book 55, Hadith 573
  (deprecated numbering scheme)