1 verse has
“sincere”
in Edition Clear Qur'an by Talal Itani / Aal-i-Imraan (The Family of Imraan)
3:179God will not leave the believers as you are, without distinguishing the wicked from the sincere. Nor will God inform you of the future, but God elects from among His messengers whom He wills. So believe in God and His messengers. If you believe and practice piety, you will have a splendid reward.
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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