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.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
abudawud:2230 – al-Qaʿnabī > Mālik > Nāfiʿ > Ibn ʿUmar

Ibn ‘Umar said “The waiting period of a woman who separates herself from her husband for compensation is a menstrual period.”  

أبو داود:٢٢٣٠ – حَدَّثَنَا الْقَعْنَبِيُّ عَنْ مَالِكٍ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ قَالَ

عِدَّةُ الْمُخْتَلِعَةِ حَيْضَةٌ  

See similar narrations below:

Collected by Dārimī
darimi:948 – Khālid b. Makhlad > Mālik > Ibn Shihāb > Saʿīd b. al-Musayyib

[Machine] "The duration of impurity for a woman who experiences istihadah is a year."  

الدارمي:٩٤٨ – حَدَّثَنَا خَالِدُ بْنُ مَخْلَدٍ حَدَّثَنَا مَالِكٌ عَنِ ابْنِ شِهَابٍ عَنْ سَعِيدِ بْنِ الْمُسَيِّبِ قَالَ

«عِدَّةُ الْمُسْتَحَاضَةِ سَنَةٌ»