من لا يحضره الفقيه, volume 4, page 227

Hadith.5536 - Asim ibn Humayd narrated from Muhammad ibn Qays, who said: I asked Imam (as) about a man who bequeathed a portion of his wealth - a third or a fourth - to another man. Then, the man (the testator) was mistakenly killed. Imam (as) said: "The will is to be executed from his wealth and from his blood money (diyyah)."

Translation: Bab Ul Qaim Publications·Thaqalayn link·The Arabic above is the original.

Hadith.5537 - In another narration, Abu Abdullah (as), was asked about a man who had bequeathed one-third of his wealth and was then killed by mistake. Imam (as) said: "One-third of his blood money (diyyah) is included in his bequest."

Translation: Bab Ul Qaim Publications·Thaqalayn link·The Arabic above is the original.

Hadith.5538 - Muhammad ibn Ya'qub Al-Kulayni, may Allah (swt) be pleased with him, narrated from Ahmad ibn Muhammad Al-'Asimi from Ali ibn Al-Hasan Al-Mithami from Al-Hasan ibn Ali ibn Yusuf from Mathanna ibn Al-Walid from Muhammad ibn Muslim from Abu Abdullah (as), who was asked about a man who appointed another man as the guardian over his children and their wealth. He also permitted him, in his will, to invest the wealth with the profit being shared between him and the children. Imam (as) said: "There is no harm in that because their father had granted him permission to do so while he was alive."

Translation: Bab Ul Qaim Publications·Thaqalayn link·The Arabic above is the original.