1 verse has
“tranquillisent”
in Edition Muhammad Hamidullah / Ar-Ra'd (The Thunder)
13:28ceux qui ont cru, et dont les cœurs se tranquillisent à l'évocation d'Allah». Certes, c'est par l'évocation d'Allah que les cœurs se tranquillisent.
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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