Sayyiduna Anas bin Malik (may Allah be pleased with him) narrates: When a proposal was made to the Prophet (peace and blessings be upon him) for any of his daughters, he would sit behind the curtain and say: "So-and-so has proposed to so-and-so." If she remained silent, her silence was counted as her consent; and if she disliked it, she would tap the curtain, and that was counted as an expression of her dislike.
At-Tabarani recorded it in al-Mu'jam al-Awsat; its chain contains Abd al-Aziz bin al-Husayn, who is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب النكاح / 7463