Translation of the verse 13 from Surah Al-Ahqaf : Number of verses 35 - - page 503 - Part 26.
Verily, those who say: "Our Lord is (only) Allah," and thereafter Istaqamu (i.e. stood firm and straight on the Islamic Faith of Monotheism by abstaining from all kinds of sins and evil deeds which Allah has forbidden and by performing all kinds of good deeds which He has ordained), on them shall be no fear, nor shall they grieve.
Indeed, those who have said, "Our Lord is Allah," and then remained on a right course - there will be no fear concerning them, nor will they grieve.
(46:13) Surely those who said: 'Our Lord is Allah' and then remained steadfast shall have nothing to fear nor to grieve. *18
*18) For explanation, see E.N.'s 33 to 35 of Ha-Mim As-Sajdah.