Chapter 31, Verse 4, Luqman
سورة لقمان
ٱلَّذِينَ يُقِيمُونَ ٱلصَّلَوٰةَ وَيُؤۡتُونَ ٱلزَّكَوٰةَ وَهُم بِٱلۡأٓخِرَةِ هُمۡ يُوقِنُونَ
Those who perform As-Salat (Iqamat-as- Salat) and give Zakat and they have faith in the Hereafter with certainty.
Chapter 51, Verse 20, The winnowing winds
سورة الذاريات
وَفِي ٱلۡأَرۡضِ ءَايَٰتٞ لِّلۡمُوقِنِينَ
And on the earth are signs for those who have Faith with certainty,
Chapter 56, Verse 95, The Event, The Inevitable
سورة الواقعة
إِنَّ هَٰذَا لَهُوَ حَقُّ ٱلۡيَقِينِ
Verily, this! This is an absolute truth with certainty.
Chapter 69, Verse 51, The reality
سورة الحاقة
وَإِنَّهُۥ لَحَقُّ ٱلۡيَقِينِ
And Verily, it (this Quran) is an absolute truth with certainty.
Chapter 102, Verse 7, Competition
سورة التكاثر
ثُمَّ لَتَرَوُنَّهَا عَيۡنَ ٱلۡيَقِينِ
And again, you shall see it with certainty of sight!