Is the hadeeth “Differences of opinion among my ummah is a mercy” saheeh?

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Is this hadeeth saheeh: “My Lord taught me good manners and He taught me well”?
There is no specific du‘aa’ for each day and night of Ramadan

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Is this hadeeth saheeh: “My Lord taught me good manners and He taught me well”?
There is no specific du‘aa’ for each day and night of Ramadan

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