Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
darimi:890ʿUbaydullāh b. Mūsá > Sufyān > Ibn Jurayj > ʿAṭāʾ

[Machine] "Al-Kudrah and as-Sufrat are considered equivalent to menstruation periods."  

الدارمي:٨٩٠أَخْبَرَنَا عُبَيْدُ اللَّهِ بْنُ مُوسَى عَنْ سُفْيَانَ عَنِ ابْنِ جُرَيْجٍ عَنْ عَطَاءٍ قَالَ

«الْكُدْرَةُ وَالصُّفْرَةُ فِي أَيَّامِ الْحَيْضِ بِمَنْزِلَةِ الْحَيْضِ»