1 verse has
“steadfast”
in Edition Clear Qur'an by Talal Itani / Al-Qasas (The Stories)
28:80But those who were given knowledge said, “Woe to you! The reward of God is better for those who believe and do righteous deeds.” Yet none attains it except the steadfast.
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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