Hadith.2420 - Mu'awiyah ibn Ammar narrated from Abu Abdullah عليه السلام, who said: "When the Messenger of Allah سبحانه وتعالى (peace and blessings of Allah سبحانه وتعالى be upon him and his family) was on a journey, he would glorify Allah سبحانه وتعالى (say 'SubhanAllah سبحانه وتعالى') when descending and magnify Allah سبحانه وتعالى (say 'Allahu Akbar') when ascending."