Surah Taha 20:28
يَفْقَهُوا۟ قَوْلِى
That they may understand my speech.
Translation: Saheeh International
Tafsir
so that they may understand what I shall say when I am delivering the Message.
Excerpt from Tafsir al-Jalalayn, commentary on 20:28, via Quran.com. The reader has the full commentary and 9 more tafsirs.