Surah Al-Anbya 21:105

وَلَقَدْ كَتَبْنَا فِى ٱلزَّبُورِ مِنۢ بَعْدِ ٱلذِّكْرِ أَنَّ ٱلْأَرْضَ يَرِثُهَا عِبَادِىَ ٱلصَّـٰلِحُونَ

And We have already written in the book [of Psalms] after the [previous] mention that the land [of Paradise] is inherited by My righteous servants.

Translation: Saheeh International

Tafsir

Certainly We wrote in the Scripture al-zabūr means ‘the Book’ that is the revealed Books of God after the Remembrance meaning the Mother of the Book umm al-kitāb which is kept with God ‘Indeed the land the land of Paradise shall be inherited by My righteous servants’ — this promise applies to all righteous ones.

Excerpt from Tafsir al-Jalalayn, commentary on 21:105, via Quran.com. The reader has the full commentary and 9 more tafsirs.