2 verses have
“Kitaabun”
in Edition English Transliteration / Fussilat (Explained in detail)
41:3Kitaabun fussilat Aayaatuhoo Qur-aanan 'Arabiyyal liqawminy ya'lamoon
41:41Inna Lazeena kafaroo biz Zikri lammaa jaa'ahum wa innahoo la Kitaabun 'Azeez
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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