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.
nasai-kubra:5413ʿUbaydullāh b. Saʿīd > Yaḥyá / al-Qaṭṭān > Mālik > ʿAbdullāh b. Dīnār > Sulaymān b. Yasār > ʿUrwah > ʿĀʾishah

"What becomes unlawful (for marriage) through birth becomes unlawful through breast-feeding." (Using translation from Nasāʾī 3300)   

الكبرى للنسائي:٥٤١٣أَخْبَرَنَا عُبَيْدُ اللهِ بْنُ سَعِيدٍ قَالَ حَدَّثَنَا يَحْيَى يَعْنِي الْقَطَّانَ عَنْ مَالِكٌ قَالَ حَدَّثَنِي عَبْدُ اللهِ بْنُ دِينَارٍ عَنْ سُلَيْمَانَ بْنِ يَسَارٍ عَنْ عُرْوَةَ عَنْ عَائِشَةَ

عَنِ النَّبِيِّ ﷺ قَالَ «مَا حَرَّمَتْهُ الْوِلَادَةُ حَرَّمَهُ الرَّضَاعُ» وَقَّفَهُ الزُّهْرِيُّ  


See similar narrations below:

Collected by Nasāʾī
nasai:3300ʿUbaydullāh b. Saʿīd > Yaḥyá > Mālik > ʿAbdullāh b. Dīnār > Sulaymān b. Yasār > ʿUrwah > ʿĀʾishah

"What becomes unlawful (for marriage) through birth becomes unlawful through breast-feeding."  

النسائي:٣٣٠٠أَخْبَرَنَا عُبَيْدُ اللَّهِ بْنُ سَعِيدٍ قَالَ حَدَّثَنَا يَحْيَى قَالَ أَنْبَأَنَا مَالِكٌ قَالَ حَدَّثَنِي عَبْدُ اللَّهِ بْنُ دِينَارٍ عَنْ سُلَيْمَانَ بْنِ يَسَارٍ عَنْ عُرْوَةَ عَنْ عَائِشَةَ

عَنِ النَّبِيِّ ﷺ قَالَ مَا حَرَّمَتْهُ الْوِلاَدَةُ حَرَّمَهُ الرَّضَاعُ