It is narrated from Saeed (may Allah have mercy on him) that Sayyiduna Umar (may Allah be pleased with him) said: Whoever a free man marries a slave woman, he has mortgaged half of himself, and whoever a slave marries a free woman, he has freed half of himself. Imam Darimi (may Allah have mercy on him) said: What is meant by this is the offspring.
Hadith Referenceسنن دارمي / من كتاب الفرائض / 3168
Hadith Takhrijاس اثر کی سند صحیح ہے۔ دیکھئے: [ابن أبى شيبه 147/4] ، [عبدالرزاق 13103] ، [ابن منصور 739، 740] ۔ اس اثر میں سعید: ابن المسیب رحمہ اللہ سید التابعین ہیں۔