Nafi' (may Allah have mercy on him) says that Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) disliked making a woman's freedom her dower until a dower was fixed for her.
The Shaykh says: The hadith of Abu Musa, in the narration of Abu Bakr bin Ayyash, indicates the same.
It has also been narrated in a weak hadith that he (the Prophet) gave her a dower.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 13744