Reference : Hisn al-Muslim 206

بِسْـمِ اللهِ
وَالْحَمْـدُ لله،
﴿سُبْحَانَ الَّذِي سَخَّرَ لَنَا هَذَا وَمَا كُنَّا لَهُ مُقْرِنِينَ *
وَإِنَّا إِلَى رَبِّنَا لَمُنقَلِبُونَ﴾
الحَمْـدُ لله، الحَمْـدُ لله، الحَمْـدُ لله،
اللهُ أكْـبَر، اللهُ أكْـبَر، اللهُ أكْـبَر، 
سُـبْحانَكَ اللّهُـمَّ إِنّي ظَلَـمْتُ نَفْسي
فَاغْـفِرْ لي،
فَإِنَّهُ لا يَغْفِـرُ الذُّنوبَ إِلاّ أَنْـت
Bismillāh, 
walḥamdulillāh. 
Subḥāna ‘lladhī sakhkhara lanā hādhā
wa mā kunnā lahu muqrinīn. 
Wa innā ilā Rabbinā lamunqalibūn. 
Alḥamdulillāh, alḥamdulillāh, alḥamdulillāh, 
Allāhu Akbar, Allāhu Akbar, Allāhu Akbar, 
Subḥānaka ‘llāhumma innī ẓalamtu nafsī, 
faghfir lī, 
fa innahu lā yaghfirudh-dhunūba illā ant.


With the Name of Allah. 
Praise is to Allah. 
Glory is to Him Who has provided this for us
though we could never have had it by our efforts. 
Surely, unto our Lord, we are returning.
Praise is to Allah. Praise is to Allah. Praise is to Allah. 
Allah is the Most Great. Allah is the Most 
Great. Allah is the Most Great. 
Glory is to You. O Allah, I have wronged my own soul. 
Forgive me, 
for surely none forgives sins but You.

Reference:
Abu Dawud 3/34, At-Tirmidhi 5/501. See also Al-Albani, Sahih 
At-Tirmidhi3/156.

Chapter: When mounting an animal or any means of transport