Surah Al-'Asr 103:1
وَٱلْعَصْرِ
By time,
Translation: Saheeh International
Tafsir
By Time! — or it ‘asr can mean the period from the declining of the sun to sunset or it may denote the afternoon prayer.
Excerpt from Tafsir al-Jalalayn, commentary on 103:1, via Quran.com. The reader has the full commentary and 9 more tafsirs.