Is there a source that proves that marriage in Islam is not complete except with a wedding, after the legal marriage contract?

Legally, marriage is established by the contract between the spouses with the consent of the guardian and the presence of two witnesses. The contract is complete with this, even if no celebration takes place. As for celebrating the marriage, announcing it, and inviting to a feast to show joy and publicize the marriage contract, all of this is desirable at the time of marriage, based on the Prophet's (peace be upon him) saying: "(Publicize the marriage)," and his saying to Abdur-Rahman ibn Awf when he got married: "(Hold a wedding feast, even if with a single sheep)."