Surah Al-Fajr 89:14

إِنَّ رَبَّكَ لَبِٱلْمِرْصَادِ

Indeed, your Lord is in observation.

Translation: Saheeh International

Tafsir

Assuredly your Lord is ever on the watch watching over the deeds of servants nothing of which escapes Him that He may then requite them for these deeds.

Excerpt from Tafsir al-Jalalayn, commentary on 89:14, via Quran.com. The reader has the full commentary and 9 more tafsirs.