Surah Maryam 19:28

يَـٰٓأُخْتَ هَـٰرُونَ مَا كَانَ أَبُوكِ ٱمْرَأَ سَوْءٍ وَمَا كَانَتْ أُمُّكِ بَغِيًّا

O sister [i.e., descendant] of Aaron, your father was not a man of evil, nor was your mother unchaste."

Translation: Saheeh International

Tafsir

O sister of Aaron — he was a righteous man in other words what is meant is O you who are like him in terms of chastity — your father was not a wicked man that is a fornicator nor was your mother unchaste’ that is a fornicatress so how is it that you have this child?

Excerpt from Tafsir al-Jalalayn, commentary on 19:28, via Quran.com. The reader has the full commentary and 9 more tafsirs.