The World Federation One Stop Fiqh

Ruling 2728

If a person states during his terminal illness that he owes an amount to someone, in the event that he is believed to have a vested interest in saying this, namely to inflict a loss on his heirs, they must give the specified amount from the one-third of his estate. However, if he is not believed to have such a vested interest, his avowal (iqrār)5 is effective and they must pay the amount from his main estate.

5An avowal in Islamic law is when someone admits to a right to his own detriment or denies a right for himself over someone else.