﴿ وَأَلْقَىٰ فِى ٱلْأَرْضِ رَوَٰسِىَ أَن تَمِيدَ بِكُمْ وَأَنْهَٰرًۭا وَسُبُلًۭا لَّعَلَّكُمْ تَهْتَدُونَ ﴾

“And he has placed firm mountains on earth, lest it sway with you, and rivers and paths, so that you might find your way,”

Please check ayah 16:18 for complete tafsir.