Abdullah bin Abbas reported,

I came along with Umar until we reached Marr al-Zahran. He then narrated the hadith at length in a manner similar to the hadith of Sulayman bin Bilal, except that he said, "I asked about the matter of the two women." He said, "Hafsah and Umm Salama."Wazad added in it, "I came to the chamber, and there was weeping in every room."He also added, "He had sworn to abstain from them for a month, so when twenty-nine days had passed, he came down to them."

Muslim 3693

Sahih

و حدثنا محمد بن المثنى حدثنا عفان حدثنا حماد بن سلمة أخبرني يحيى بن سعيد عن عبيد بن حنين

عن ابن عباس قال

أقبلت مع عمر حتى إذا كنا بمر الظهران وساق الحديث بطوله كنحو حديث سليمان بن بلال غير أنه قال قلت شأن المرأتين قال حفصة وأم سلمة وزاد فيه وأتيت الحجر فإذا في كل بيت بكاء وزاد أيضا وكان آلى منهن شهرا فلما كان تسعا وعشرين نزل إليهن

مسلم 3693صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Divorce
Chapter
Ila, withdrawing from women, giving them the choice, and His saying, "And if you cooperate against him"
Numbering
Darussalam 3693
Muslim 3693