Surah Maryam 19:20

قَالَتْ أَنَّىٰ يَكُونُ لِى غُلَـٰمٌ وَلَمْ يَمْسَسْنِى بَشَرٌ وَلَمْ أَكُ بَغِيًّا

She said, "How can I have a boy while no man has touched me and I have not been unchaste?"

Translation: Saheeh International

Tafsir

She said ‘How shall I have a boy when no human being has ever touched me by way of conjugality neither have I been unchaste?’ neither have I been a fornicator.

Excerpt from Tafsir al-Jalalayn, commentary on 19:20, via Quran.com. The reader has the full commentary and 9 more tafsirs.