What is "people" (al-nas) referring to in this āyah?
What is meant by the people being "a single ummah", and when was this?
What is meant by "the truth" (al-haqq)?
Who would "judge between mankind" according to this?
What does the pronoun in "did not differ concerning it/him" refer to?
What does "that concerning which they differed" refer to in the āyah?