Musannaf Ibn Abi Shaybah 23778 — A father who takes from his child

It is narrated from Bakr that a man from the desert people gave his daughter in marriage and took her mahr, and then he died. She disputed with her brothers about her mahr and brought the case to Sayyiduna Umar (may Allah be pleased with him). Sayyiduna Umar (may Allah be pleased with him) said: Whatever of your mahr is still present is yours, and in whatever your father has used up, there is nothing for you.