3 verses have
“كَلَّا”
in Edition Uthmani / Al-Alaq (The Clot)
6:96كَلَّآ إِنَّ ٱلْإِنسَٰنَ لَيَطْغَىٰٓ
15:96كَلَّا لَئِن لَّمْ يَنتَهِ لَنَسْفَعًۢا بِٱلنَّاصِيَةِ
19:96كَلَّا لَا تُطِعْهُ وَٱسْجُدْ وَٱقْتَرِب ۩
Support Ayat Al Quran
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