Surah Al-Qamar 54:5

حِكْمَةٌۢ بَـٰلِغَةٌ ۖ فَمَا تُغْنِ ٱلنُّذُرُ

Extensive wisdom - but warning does not avail [them].

Translation: Saheeh International

Tafsir

wisdom hikmatun is the predicate of an omitted subject or a substitution for mā ‘such as’ or for muzdajar ‘deterrent’ that is far-reaching complete; but warnings nudhur is the plural of nadhīr functioning in the agent sense of mundhir ‘a warner’ that is to say ‘those matters which warn them’; …

Excerpt from Tafsir al-Jalalayn, commentary on 54:5, via Quran.com. The reader has the full commentary and 9 more tafsirs.