Amir on Yaqeen: If the Veil were lifted, our conviction would not increase

Al-Qushayri reported: ‘Amr ibn Abdi Qays, may Allah have mercy on him, said, “Were the veil over the Unseen to be lifted, that would not increase our conviction.”

Source: al-Risālah al-Qushayrīyah 1/319

عن القشيري قال عَامِرِ بْنِ عَبْدِ قَيْسٍ رحمه الله لَوْ كُشِفَ الْغِطَاءُ مَا ازْدَدْتُ يَقِينًا

1/319 الرسالة القشيرية