God Almighty said: Say, “Call upon God” or “Call upon the Most Merciful,” whichever you call upon, to Him belong the most beautiful names. So the ruling is for the one who calls upon the divine names, not for the names, for even if their meanings are separate and distinct, they have an indication of a specific entity in the sentence and in the same matter, even if it is not known and no one can comprehend it. This does not discredit our understanding and knowledge that there is an entity to which these names are given. Likewise, fasting is what is required, whether it is recommended or obligatory, given the many sharing of the obligation in it .