اللَّهُ أَكْبَرُ اللَّهُ أَكْبَرُ اللَّهُ أَكْبَرُ
Allahu Akbar, Allahu Akbar, Allahu Akbar
Allah is the Greatest, Allah is the Greatest, Allah is the Greatest. (Said when ascending a hill or taking off.)
Jabir (RA) said: "When we ascended, we would say Allahu Akbar, and when we descended, we would say SubhanAllah." The logic is beautiful: ascending brings you closer to the sky, so you declare Allah's greatness; descending reminds you of His perfection, so you glorify Him.
Related Du'as
اللَّهُمَّ إِنِّي أَعُوذُ بِكَ مِنْ وَعْثَاءِ السَّفَرِ وَكَآبَةِ الْمَنْظَرِ وَسُوءِ الْمُنْقَلَبِ فِي الْمَالِ وَالْأَهْلِ
O Allah, I seek refuge in You from the hardships of travel, depressing sights, and a bad return regarding wealth and family.
Sahihاللَّهُمَّ أَنْتَ الصَّاحِبُ فِي السَّفَرِ وَالْخَلِيفَةُ فِي الْأَهْلِ
O Allah, You are the Companion on the journey and the Guardian over the family.
Sahihاللَّهُمَّ هَوِّنْ عَلَيْنَا سَفَرَنَا هَذَا وَاطْوِ عَنَّا بُعْدَهُ
O Allah, make this journey easy for us, and fold up its distance for us.
Sahihأَسْتَوْدِعُكَ اللَّهَ الَّذِي لَا تَضِيعُ وَدَائِعُهُ
I entrust you to Allah, whose trusts are never lost.
Sahih