It is narrated from Abu Hurairah, may Allah be pleased with him, that the Messenger of Allah, peace and blessings be upon him, said: "When any of you is invited and he comes along with the messenger who brought the invitation, then that is permission for him." And in his narration, it is mentioned: "A man sending a messenger to another man is itself permission." Weak, narrated by Abu Dawood. Authentic, narrated by Abu Dawood.