MUSLIM SONS' INHERITANCE SHARE
Muslim Sons inherit as a Joint Residuary with Daughters otherwise, they inherit residue as an independent. Sons get double the share of Daughters under Joint Residuary as stated in the Holy Quran, 4:11.
The Father cannot disinherit children in Islam and must follow Faraid as stipulated in the Holy Quran, 4:11.
Sons block Sons of Sons (how low soever) and also block siblings and their descendants. Sons also block Granddaughters (how low soever).
Sons inherit from their parents only if their parents were married Islamically (i.e., Nikah) otherwise, they are not eligible.
A Muslim son's property can be inherited by his wife, children (or grandchildren), and parents (or grandparents) as primary heirs. These are the legal heirs after the death of a married son in Islam. Refer to "Islamic inheritance sharers and residuary" to learn more.
Sons also can own lifetime gifts (i.e., Hiba) from their parents without restrictions, but all children should be treated equally for lifetime gifts as stated in the Book of Hadith, Bulugh al-Maram, Book 7, Hadith 928; "My father went then to the Prophet (Sallallahu Alayhi Wasallam) to call him as a witness to my Sadaqah (i.e., gift), and he asked, "Have you done the same with all your children?" He replied, "No." He said, "Fear Allah and treat your children equally." My father then returned and took back that gift." If you want to give more to one child (or children) than the rest child (or children), please consult a knowledgeable Sunni Islamic scholar.
We encourage you to read our book, which includes exclusive details about Islamic inheritance sharers, shares, residuary, and distant kindred relatives.