Kehf suresi, 23. ayet

(It is not in mortals to command success). Therefore, do not resolve upon doing something the morrow without appending "Allah willing",

do not say of anything, ‘I will do that tomorrow,’

Nor say of anything, "I shall be sure to do so and so tomorrow"-

And never say about anything: "I shall certainly do this tomorrow"

Never say about anything, ‘I will do that tomorrow,’ -

And never say of anything, "I shall do such and such thing tomorrow."

Do not say about anything, ‘I will indeed do it tomorrow,’

And never say of anything, `I am going to do it tomorrow,'

And do not say, regarding anything, 'I am going to do that tomorrow,'

Never say that you will do such and such thing without mentioning: "God willing. " If you forget to do this, you must immediately apologize to your Lord and …

And never say of anything, 'Verily, I am going to do that to-morrow,'

Do not say of anything: "I will do this tomorrow;"

Say not of any matter, I will surely do this to morrow;

Some say, "They were three, and the fourth of them was their dog:" and some say, "Five, and the sixth of them was their dog:" guessing at the unseen: and some say, "Seven, and the eighth of them was their dog. " Say, "My Lord knows best the number of them; none knows them but a few. Enter not, therefore, into disputation concerning the matter, except what is clear, and consult not any one of them to pronounce concerning them.

And definitely do not say, regarding anything, "Surely I am performing that tomorrow, "

And say not of anything: Lo! I shall do that tomorrow,

Do not say of any thing: "I will do it tomorrow, "

AND NEVER say about anything, "Behold, I shall do this tomorrow,"

And never say of anything, "I will definitely do this tomorrow,"

And do not say of anything: "I will do this tomorrow. "

You shall not say that you will do anything in the future,

And never say of anything, "Indeed, I will do that tomorrow,"

(And say thou not of anything: “I will do that tomorrow,”

(This is the news of the Unseen. Like, the next day is unseen for you.) Never say about anything, "Behold I will do it tomorrow." (Things may happen beyond one's control later).

And do not say about anything, "I shall surely do this and this tomorrow"—

And never say about anything, "I will do this tomorrow,"

And do not simply say of something: "I will do this tomorrow."