2 verses have
“assumptions”
in Edition Clear Qur'an by Talal Itani / An-Najm (The Star)
53:23These are nothing but names, which you have devised, you and your ancestors, for which God sent down no authority. They follow nothing but assumptions, and what the ego desires, even though guidance has come to them from their Lord.
53:28They have no knowledge of that. They only follow assumptions, and assumptions are no substitute for the truth.
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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