If you are congratulating someone in a dream, then such dream indicates your capability to be handful for those who need help. If you see yourself being congratulated by others, then such dream foretells about the necessity to accept help from others. Perhaps you are the person who finds it hard to be helped by others.
Dream dictionary: Congratulate dream meanings
…Dreaming that you are wounded, signals distress and an unfavorable turn in business. To see others wounded, denotes that injustice will be accorded you by your friends. To relieve or dress a wound, signifies that you will have occasion to congratulate yourself on your good fortune….
…(Celestial beings | Heavenly beings) If one sees the heavenly angels (arb. Mala’ika) coming before him to congratulate him in a dream, it means that God Almighty has forgiven that person his sins and endowed him with patience, through which he will attain success in this life and in the hereafter. If one sees the heavenly angels greeting him or giving him something in the dream, it means that his insight will grow, or that he maybe martyrized. If one sees angels descending upon a locality that is raging with a war in a dream, it means that the dwellers of that place will win victory. If the people are suffering from adversities, it means that their calamities will be lifted. Flying with angels or visiting the heavens in their company in a dream may mean that one will die in the station of a martyr and receive God’s…
…if he sees Ridhwan (uwbp) in a dream, it means that they will wind up in blessings and harmony, and particularly if Ridhwan (uwbp) hands the person a heavenly fruit or a heavenly garment, or meets him cheerfully with a comforting smile, showing a sign of God’s pleasure with him. Seeing him (uwbp) in a dream also denotes a divine grace which is bestowed secretly and openly upon the one who sees him. Seeing Ridhwan (uwbp) in a dream also denotes a happy life, joy, peace, comfort and blessings in this world and in the next. If one sees the heavenly angels coming before him to congratulate him in a dream, it means that God Almighty has forgiven that person his sins and endowed him with the gift of patience and forbearance through which he will triumph in this life and be blessed in the next. (Also see Paradise)…