Surah Al-Muddaththir 74:1

يَـٰٓأَيُّهَا ٱلْمُدَّثِّرُ

O you who covers himself [with a garment],

Translation: Saheeh International

Tafsir

O you enveloped in your mantle the Prophet s al-muddaththir is actually al-mutadaththir but the tā’ has been assimilated with the dāl that is to say the one who is enwrapped in his clothes when the Revelation Gabriel comes down on him

Excerpt from Tafsir al-Jalalayn, commentary on 74:1, via Quran.com. The reader has the full commentary and 9 more tafsirs.