Musannaf Ibn Abi Shaybah 22844 — A girl: when is her gift valid?

Amir (al-Sha'bi) (may Allah have mercy on him) said: I read the letter of Sayyiduna Umar (may Allah be pleased with him) to Shurayh (may Allah have mercy on him) on this matter. It came about because a girl of Quraysh, who was newly married, was told by her brother: Hand over your inheritance from your father to me (give it to me as charity) before you go to your husband's home. She did so. Then she asked for her inheritance, and he returned it to her.