2 verses have
“certain”
in Edition Clear Qur'an by Talal Itani / Muhammad (Muhammad)
47:26That is because they said to those who hated what God has revealed, “We will obey you in certain matters.” But God knows their secret thoughts.
47:31We will certainly test you, until We know those among you who strive, and those who are steadfast, and We will test your reactions.
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