1 verse has
“لنصدقن”
in Edition Simple Clean / At-Tawba (The Repentance)
75:9۞ ومنهم من عاهد الله لئن آتانا من فضله لنصدقن ولنكونن من الصالحين
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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