Surah Az-Zumar 39:63

لَّهُۥ مَقَالِيدُ ٱلسَّمَـٰوَٰتِ وَٱلْأَرْضِ ۗ وَٱلَّذِينَ كَفَرُوا۟ بِـَٔايَـٰتِ ٱللَّهِ أُو۟لَـٰٓئِكَ هُمُ ٱلْخَـٰسِرُونَ

To Him belong the keys of the heavens and the earth. And they who disbelieve in the verses of Allāh - it is those who are the losers.

Translation: Saheeh International

Tafsir

To Him belong the keys of the heavens and the earth in other words the keys to their storehouses of rain and vegetation and other things. And those who disbelieve in the signs of God such as the Qur’ān — those they are the losers ūlā’ika humu’l-khāsirūna is semantically connected to His words wa-yunajjī’Llāhu’lladhīna …

Excerpt from Tafsir al-Jalalayn, commentary on 39:63, via Quran.com. The reader has the full commentary and 9 more tafsirs.