1 verse has
“strongest”
in Edition Clear Qur'an by Talal Itani / Al-Maaida (The Table)
5:53Those who believe will say, “Are these the ones who swore by God with their strongest oaths that they are with you?” Their works have failed, so they became losers.
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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