Mishkat al-Masabih 9 Supplications كتاب الدعوات 222

وَعَن جابرٍ قَالَ: كُنَّا إِذَا صَعِدْنَا كَبَّرْنَا وَإِذَا نَزَلْنَا سبحنا. رَوَاهُ البُخَارِيّ

Jabir said that when they went up to high ground they said, “God is most great,” and when they descended they said, “Glory be to God.” Bukhari transmitted it.