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 لَيِّنْ لَنَا أَرْضَكَ وَذَلِّلْ لَنَا صُعُوبَتَهَا
O Allah, soften Your earth for us and ease its difficulties.
Hasanاللَّهُمَّ هَوِّنْ عَلَيْنَا سَفَرَنَا هَذَا وَاطْوِ عَنَّا بُعْدَهُ
O Allah, make this journey easy for us, and fold up its distance for us.
Sahihتَوْبًا تَوْبًا لِرَبِّنَا أَوْبًا لَا يُغَادِرُ عَلَيْنَا حَوْبًا
Repentance, repentance to our Lord — a return that leaves no sin upon us.
Hasanاللَّهُمَّ إِنَّا نَسْأَلُكَ فِي سَفَرِنَا هَذَا الْبِرَّ وَالتَّقْوَى وَمِنَ الْعَمَلِ مَا تَرْضَى
O Allah, we ask You in this journey of ours for righteousness and piety, and for deeds that are pleasing to You.
Sahih