3 verses have
“understand”
in Edition Clear Qur'an by Talal Itani / Al-Anbiyaa (The Prophets)
21:10We have sent down to you a Book, containing your message. Do you not understand?
21:67Fie on you, and on what you worship instead of God. Do you not understand?”
21:79And so We made Solomon understand it, and to each We gave wisdom and knowledge. And We subjected the mountains along with David to sing Our praises, and the birds as well—surely We did.
Support Ayat Al Quran
Those who spend their wealth by night and day, privately and publicly, will receive their reward from their Lord. They have nothing to fear, nor shall they grieve.
The Holy Quran · Al-Baqara (The Cow) · 2:274