Musnad Ahmad 30:2471

Yahya narrated to us, from Ibn ‘Ajlan, who said: Sa‘id informed me, from Abu Hurayrah, from the Prophet (peace and blessings of Allah be upon him), that when he traveled, he would say: "O Allah, I seek refuge in You from the hardships of travel, the gloom of returning, and a bad sight regarding family and wealth. O Allah, You are the Companion in travel and the Successor in the family. O Allah, fold the earth for us and make the travel easy for us."