It is narrated from Sayyiduna Usama bin Zaid (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "A Muslim cannot be the heir of a disbeliever, nor can a disbeliever be the heir of a Muslim."
Hadith Referenceسنن دارمي / من كتاب الفرائض / 3031
Hadith Takhrijاس حدیث کی سند صحیح ہے۔ دیکھئے: [بخاري 6764] ، [مسلم 1614] ، [أبوداؤد 2909] ، [ترمذي 2108] ، [ابن ماجه 2729] ، [أبويعلی 4757] ، [ابن حبان 6033] ، [الحميدي 551] ۔ نیز آگے بھی یہ حدیث آرہی ہے۔
Brief Explanation
(Commentary on Ahadith 3020 to 3031)
That is, if the father is Muslim and the son is disbeliever (kafir), then the father will not inherit from the son; and if the son is a disbeliever and the father is Muslim, then the son will also not inherit from the father.