Sunan Abi Dawud Divorce (Kitab Al-Talaq) ibn Umar Muhammad bin 'Abdur Rahman bin 'Ubaid محمد بن عبد الرحمن بن عبيد القرشي Salim bin 'Abdullah bin 'Umar سالم بن عبد الله بن عمر بن الخطاب Sufyan bin Sa‘id Ath-Thawri سفيان الثوري Uthman bin Muhammad Waki' bin al-Jarrah وكيع بن الجراح Sahih The aforesaid tradition has also been transmitted by Nafi’ through a different chain of narrators. This version says Ibn ‘Umar divorced a wife of his while she was menstruating pronouncing one divorce. He then narrated the rest of the tradition similar to the one narrated by Malik. https://parallelquran.com/hadith/sunan-abi-dawud-2180/ Sunan Abi Dawud Oaths and Vows (Kitab Al-Aiman Wa Al-Nudhur) Hashim bin al-Qasim bin Muslim هاشم بن القاسم أبو النضر - قيصر ibn Abbas Karayb bin Abi Muslim كريب بن أبي مسلم الهاشمي Muhammad bin 'Abdur Rahman bin 'Ubaid محمد بن عبد الرحمن بن عبيد القرشي Sharayk bin 'Abdullah شريك بن عبد الله النخعي Da'if The tradition mentioned above has also been transmitted by Abu Sa’id al-Ru’aini with the same chain as narrated by Yahya (b. Sa’id) and to the same effect. https://parallelquran.com/hadith/sunan-abi-dawud-3294/