Hadith #1069 (Sahih al-Bukhari)
Book: Shortening the Prayers (At-Taqseer)
Narrator(s): Hafs bin 'Asim bin 'Umar حفص بن عاصم بن عمر
Grade: Sahih

Ibn `Umar went on a journey and said, “I accompanied the Prophet (ﷺ) and he did not offer optional prayers during the journey, and Allah says: ‘Verily! In Allah’s Messenger (ﷺ) you have a good example to follow.’ ” (33.21)

Source: https://parallelquran.com/hadith/sahih-al-bukhari-1069/