هَدَاكَ اللَّهُ لِصَالِحِ الْأَعْمَالِ
May Allah guide you to righteous deeds.
The Arabic uses a past verb in a declarative structure, but when uttered as a blessing it functions as a supplication, not a report of completed guidance.
The grammatical form remains recognisable, while the communicative act changes through context. Syntax and speech function must therefore be distinguished.