أَسْتَوْدِعُكَ اللَّهَ الَّذِي لَا تَضِيعُ وَدَائِعُهُ
Astawdi'ukallaha alladhi la tadi'u wada'i'uh
I entrust you to Allah, whose trusts are never lost.
Said to the one staying behind when you are the one traveling — or vice versa. "Wada'i'uh" — His trusts, His deposits, things entrusted to Him — are never lost or wasted. When you leave your family behind and say this, you are placing them in divine safekeeping. It is the traveler's farewell — not "goodbye" but "I leave you with the One who never loses what is placed in His care."
Related Du'as
اللَّهُ أَكْبَرُ اللَّهُ أَكْبَرُ اللَّهُ أَكْبَرُ
Allah is the Greatest, Allah is the Greatest, Allah is the Greatest. (Said when ascending a hill or taking off.)
Sahihاللَّهُمَّ 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 هَوِّنْ عَلَيْنَا سَفَرَنَا هَذَا وَاطْوِ عَنَّا بُعْدَهُ
O Allah, make this journey easy for us, and fold up its distance for us.
Sahihاللَّهُمَّ اغْفِرْ لِي ذُنُوبِي وَافْتَحْ لِي أَبْوَابَ رَحْمَتِكَ
O Allah, forgive my sins and open for me the doors of Your mercy.
Hasan