Inviting people to partake of food after Jumu`ah Prayer
A man always invites others to have lunch or coffee after the end of Jumu`ah (Friday) Prayer. He tells the people, "Come and have coffee or lunch."
(Part No. 22; Page No. 350
If the situation is as you have mentioned, there will be no harm in doing this, especially that it is a call for hospitality towards people; it is also one of the noble manners that are desirable in Shari`ah (Islamic law). This has nothing to do with announcing a lost object in the Masjid, which is prohibited.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.