1 verse has
“أَيَّانَ”
in Edition Uthmani / An-Naml (The Ant)
65:27قُل لَّا يَعْلَمُ مَن فِى ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ ٱلْغَيْبَ إِلَّا ٱللَّهُ ۚ وَمَا يَشْعُرُونَ أَيَّانَ يُبْعَثُونَ
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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