Surah Saba 34:14

فَلَمَّا قَضَيْنَا عَلَيْهِ ٱلْمَوْتَ مَا دَلَّهُمْ عَلَىٰ مَوْتِهِۦٓ إِلَّا دَآبَّةُ ٱلْأَرْضِ تَأْكُلُ مِنسَأَتَهُۥ ۖ فَلَمَّا خَرَّ تَبَيَّنَتِ ٱلْجِنُّ أَن لَّوْ كَانُوا۟ يَعْلَمُونَ ٱلْغَيْبَ مَا لَبِثُوا۟ فِى ٱلْعَذَابِ ٱلْمُهِينِ

And when We decreed for him [i.e., Solomon] death, nothing indicated to them [i.e., the jinn] his death except a creature of the earth eating his staff. But when he fell, it became clear to the jinn that if they had known the unseen, they would not have remained in humiliating punishment.

Translation: Saheeh International

Tafsir

And when We decreed for him for Solomon death in other words when he died — he remained supported against his staff an entire year while the jinn continued to toil in hard labour as was customary unaware of his death until finally when a termite ate through his staff he fell to the ground and was seen to be dead — …

Excerpt from Tafsir al-Jalalayn, commentary on 34:14, via Quran.com. The reader has the full commentary and 9 more tafsirs.