Quran english Az Zumar 56

أن تقول نفس يا حسرتا على ما فرطت في جنب الله وإن كنت لمن الساخرين

An taqoola nafsun ya hasrataAAala ma farrattu fee janbi Allahiwa-in kuntu lamina assakhireen

 
Sahih International
Lest a soul should say, “Oh [how great is] my regret over what I neglected in regard to Allah and that I was among the mockers.”
Muhsin Khan
Lest a person should say: “Alas, my grief that I was undutiful to Allah (i.e. I have not done what Allah has ordered me to do), and I was indeed among those who mocked [at the truth! i.e. La ilaha ill-Allah (none has the right to be worshipped but Allah), the Quran, and Muhammad SAW and at the faithful believers, etc.]
Pickthall
Lest any soul should say: Alas, my grief that I was unmindful of Allah, and I was indeed among the scoffers!
Yusuf Ali
“Lest the soul should (then) say: ‘Ah! Woe is me!- In that I neglected (my duty) towards Allah, and was but among those who mocked!’-
Shakir
Lest a soul should say: O woe to me! for what I fell short of my duty to Allah, and most surely I was of those who laughed to scorn;
Dr. Ghali
(Lest) any self should say, ‘Oh, for (my) regret in that I indeed neglected my duty towards (literally: in the side of) Allah, and decidedly I was one of the scoffers.