2 verses have
“كَانَ”
in Edition Uthmani / Al-Ma'aarij (The Ascending Stairways)
4:70تَعْرُجُ ٱلْمَلَٰٓئِكَةُ وَٱلرُّوحُ إِلَيْهِ فِى يَوْمٍۢ كَانَ مِقْدَارُهُۥ خَمْسِينَ أَلْفَ سَنَةٍۢ
44:70خَٰشِعَةً أَبْصَٰرُهُمْ تَرْهَقُهُمْ ذِلَّةٌۭ ۚ ذَٰلِكَ ٱلْيَوْمُ ٱلَّذِى كَانُوا۟ يُوعَدُونَ
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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