Surah Al-Muddaththir 74:21
ثُمَّ نَظَرَ
Then he considered [again];
Translation: Saheeh International
Tafsir
Then he contemplated the faces of his people; or he contemplated with what words he might cast aspersions upon it.
Excerpt from Tafsir al-Jalalayn, commentary on 74:21, via Quran.com. The reader has the full commentary and 9 more tafsirs.