Muwatta Malik — Hadith #35127

Malik said, “I was informed on the authority of Sulayman bin Yassar, something like that. Malik said: Whoever dies with a vow of freeing a slave, or fasting, or Zakat or Zakat, so he recommended that this be paid on his behalf from his wealth, because Zakat and Zakat are one-third of it, and it is based on the other amounts. The commandments Except what is like it, and that is because it is not obligatory for him to do the vows and other things like what he does voluntarily from what is not obligatory. Rather, he makes This applies specifically to a third of it, excluding his capital, because if he had been permitted to do so with his capital, the deceased would have delayed matters like that. What is obligatory on him, even if death comes and the money goes to his heirs. He named such things that he did not receive from him. If it were permissible for him to leave these things until he named them at the time of his death and hoped that he would enclose all of his wealth, then that is not the case. For him.