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But as for those who fear their Rabb, and therefore obey Him - for them there will be lofty abodes with [other] lofty abodes built above them, with rivers flowing beneath them, that is, beneath [both] the upper and the lower abodes - a promise of Allahu ta’ālā (wa'da'llāhi, in the accusative because of an implied verb governing it). Allahu ta’ālā does not fail the tryst, [He does not break] His promise.