اعراب جملة عند الصباح يحمد القوم السرى

In the morning, the people praise the hidden secret: “In the morning” is a time adverb with a fatha, “the people” is the subject in the nominative case with a damma, “praise” is a present tense verb with a damma, and “the hidden secret” is the object in the accusative case with a fatha.