[If] a house collapsed upon a man and his father, or upon him and one from whom he inherits, and there was a wife's kesubah or a creditor's [claim outstanding] against him —- the father's heirs claim [that] the son died first and then the father; [while] the creditors claim [that] the father died first and then the son —- Beis Shammai say: They divide [the estate]. But Beis Hillel say: The property retains its status.