Amr b. Shu'aib on his father's authority said that his grandfather (Abdullah ibn Amr ibn al-'As):
The Prophet (ﷺ) said: There is no divorce except in what you possess; there is no possession, there is no sale transaction till you possess. The narrator Ibn as-Sabbah added: There is no fulfilling a vow till you possess.
Reference: Sunan Abi Dawud 2190 In-book : Book 13, Hadith 16 English translation : Book 12, Hadith 2185
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