«اِلْخِيرْ عَلَى قْدُومِ الْوَارْدِينْ»

The saying ties a piece of good fortune to the moment certain people turned up. The arrivals are simply people who come or visit. When something beneficial happens just as they arrive, the speaker treats their coming as the occasion of that blessing.

In this way the phrase does more than remark on a coincidence. It casts the newcomers as bearers of luck, honoring them as a courtesy rather than literally claiming they caused the good news their arrival coincided with.

Use it when a gain, success, or pleasant event coincides with people arriving. It courteously credits the visitors with bringing the good luck, so it suits hospitable or celebratory moments as a warm compliment.