And when he would return from a journey, he used to say the same words and made this addition:
آئِبُوْنَ تَائِبُوْنَ عَابِدُوْنَ لِرَبِّناَ حَامِدُوْنَ.
‘We are returning, repenting, worshiping and praising our Rabb'
(Muslim)
Abdullah ibn Umar (Radi-allahu-anhu) narrates that when Rasulullah (Sallallahu-alaihi-wasallam) used to mount his animal for setting out on a journey, he would say اللهُ أَكْبَرُ (Allahu-Akbar - Allah is Great) three times and then pray:
سُبْحَانَ الَّذِيْ سَخَّرَ لَناَ هَذَا وَمَا كُنَّا لَهُ مُقرِنِيْنَ وإِنَّا إِلَى رَبِّناَ لمُنْقَلِبُوْنَ ،
And when he would return from a journey, he used to say the same words and made this addition:
آئِبُوْنَ تَائِبُوْنَ عَابِدُوْنَ لِرَبِّناَ حَامِدُوْنَ.
‘We are returning, repenting, worshiping and praising our Rabb'
(Muslim)