وَحَدَّثَنِي عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، أَنَّ زَيْدَ بْنَ ثَابِتٍ، كَانَ يَقُولُ إِذَا دَخَلَ الرَّجُلُ بِامْرَأَتِهِ فَأُرْخِيَتْ عَلَيْهِمَا السُّتُورُ فَقَدْ وَجَبَ الصَّدَاقُ ‏.‏

Yahya related to me from Malik from Ibn Shihab that Zayd ibnThabit said, "When a man takes his wife to his house and co-habitswith her then the bride-price is obliged." Translation Not Available

Book Ref: Muwatta Imam Malik Book 28 Hadith 1106
Web Ref:  Muwatta Imam Malik Book 28 Hadith 13