Bulugh al-Maram, Book 1, Hadith 180 (In-Book)

In another version of Abu Da’ud: "The Prophet (Peace be upon him) did not command her to repeat the prayers (missed during the period of bleeding)."

وَفِي لَفْظٍ لَهُ: { وَلَمْ يَأْمُرْهَا اَلنَّبِيُّ ‏- صلى الله عليه وسلم ‏-بِقَضَاءِ صَلَاةِ اَلنِّفَاسِ } وَصَحَّحَهُ اَلْحَاكِم ُ (179)‏.‏ ‏4 ‏- ضعيف.‏ كسابقه، وهو عند أبي داود (312)‏، والحاكم (175)‏.‏

sunnah.com

also referenced under: Book 1, Hadith 162 (English)