Should a deceased nephew be included in the obligatory inheritance?

The fundamental principle of giving testimony is that it must be based on knowledge and certainty, as Allah Almighty says: "Except those who testify to the truth, and they know" (Quran 43:86), and as the brothers of Yusuf said: "And we did not testify except to what we knew" (Quran 12:81). The Prophet, peace and blessings be upon him, said to Ibn Abbas: "Do not testify except to what is as clear to you as the brightness of this sun."

Therefore, testimony is not permissible except concerning what the witness knows with certainty. If you testify to what you do not know, then you have sinned. However, if you testify to what you know, and then it turns out to be contrary to what you said without your knowledge, there is no sin upon you, as Allah Almighty says: "And there is no blame upon you for that in which you have erred, but [only for] what your hearts intended" (Quran 33:5).

Finally, the nephew inherits on the condition that there is no closer male relative and that there is something remaining from the inheritance after the sharers of fixed shares have taken theirs.