كتاب الحج
15  
The Book of Pilgrimage
(75)
Chapter: It is recommended to recite statements of remembrance when setting out for Hajj or any other purpose, and the best of this remembrances
(75)
باب مَا يَقُولُ إِذَا رَكِبَ إِلَى سَفَرٍ الْحَجِّ وَغَيْرِهِ ‏‏
Sahih Muslim 1343 a

Abdullah b. Sarjis (Allah be pleased with him) reported that when Allah's Messenger (ﷺ) set forth on a journey, he sought refuge (with Allah) from the hardships of the travelling, and finding of evil changes on return, and disgrace after honour, and the curse of the oppressed and a gloomy sad scene in family and property.

حَدَّثَنِي زُهَيْرُ بْنُ حَرْبٍ، حَدَّثَنَا إِسْمَاعِيلُ ابْنُ عُلَيَّةَ، عَنْ عَاصِمٍ الأَحْوَلِ، عَنْ عَبْدِ، اللَّهِ بْنِ سَرْجِسَ قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم إِذَا سَافَرَ يَتَعَوَّذُ مِنْ وَعْثَاءِ السَّفَرِ وَكَآبَةِ الْمُنْقَلَبِ وَالْحَوْرِ بَعْدَ الْكَوْرِ وَدَعْوَةِ الْمَظْلُومِ وَسُوءِ الْمَنْظَرِ فِي الأَهْلِ وَالْمَالِ‏.‏
Reference : Sahih Muslim 1343a
In-book reference : Book 15, Hadith 480
USC-MSA web (English) reference : Book 7, Hadith 3114
  (deprecated numbering scheme)