1 verse has
“thirty”
in Edition Clear Qur'an by Talal Itani / Al-A'raaf (The Heights)
7:142And We appointed to Moses thirty nights, and completed them with ten; and thus the time appointed by his Lord was forty nights. And Moses said to his brother Aaron: “Take my place among my people, and be upright, and do not follow the way of the mischief-makers.”
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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