1 verse has
“طوعا”
in Edition Simple Clean / At-Tawba (The Repentance)
53:9قل أنفقوا طوعا أو كرها لن يتقبل منكم ۖ إنكم كنتم قوما فاسقين
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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