1 verse has
“Mühsal”
in Edition A. S. F. Bubenheim and N. Elyas / Saad (The letter Saad)
38:41Und gedenke Unseres Dieners Ayyub. Als er zu seinem Herrn rief: "Mich hat der Satan mit Mühsal und Pein heimgesucht."
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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