never say of anything, "I shall certainly do this tomorrow," 23 Except if Allah will. And remember thy Lord when thou forgettest, and say: It may be that my Lord guideth me unto a nearer way of truth than this. 24 And they remained in their cave three hundred years and (some) add (another) nine. 25 Say: "God knows best how long they remained [there]. His [alone] is the knowledge of the hidden reality of the heavens and the earth: how well does He see and hear! No guardian have they apart from Him, since He allots to no one a share in His rule!" 26 Recite what has been revealed to you of the Book of your Lord. There is no one who can change the word of God; and you will not find refuge except in Him. 27 And keep yourself patient [by being] with those who call upon their Lord in the morning and the evening, seeking His countenance. And let not your eyes pass beyond them, desiring adornments of the worldly life, and do not obey one whose heart We have made heedless of Our remembrance and who follows his desire and whose affair is ever [in] neglect. 28 And proclaim: "This is the Truth from your Lord. Now let him who will, believe; and let him who will, disbelieve. We have prepared a Fire for the wrong-doers whose billowing folds encompass them. If they ask for water, they will be served with a drink like dregs of oil that will scald their faces. How dreadful a drink, and how evil an abode! 29 Surely (as for) those who believe and do good, We do not waste the reward of him who does a good work. 30 There will be gardens of Eden for them, with rivers flowing by, where they will be decked in bracelets of gold, with silken robes of green and of brocades to wear, reclining on couches. How excellent the guerdon, and excellent the resting-place! 31