Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:79:32 –

And the mountains He set firmly  

and has set firm the mountains, on the face of the earth so that it stays still,
القرآن:٧٩:٣٢ –

وَالْجِبَالَ أَرْسَاهَا  

{والجبال أرساها} أثبتها على وجه الأرض لتسكن.

See similar narrations below:

Collected by Qurʾān
quran:78:7 –

And the mountains as stakes?  

and the mountains pegs?, with which the earth is tied down like tents are tied down with pegs (the interrogative is meant as an affirmative).
القرآن:٧٨:٧ –

وَالْجِبَالَ أَوْتَادًا  

{والجبال أوتادا} تثبت بها الأرض كما تثبت الخيام بالأوتاد، والاستفهام للتقرير.