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
bayhaqi:15738 – Abū ʿAbdullāh al-Ḥāfiẓ > ʿAbd al-Raḥman b. al-Ḥasan > Ibrāhīm b. al-Ḥusayn > Ādam > And Rqāʾ > Ibn Abū Najīḥ

[Machine] In His saying, "Mothers should breastfeed their children for two complete years." He meant that divorced mothers should not be harmed, as a mother should not refuse to breastfeed her child if it causes harm to the father or if the child does not want to breastfeed. Likewise, the father should not be harmed if the mother prevents him from breastfeeding the child in order to make her sad. The same applies to the inheritor. He meant the guardian, if they both agree to separate without harming themselves and consult each other, but not to the disadvantage of their child, then there is no blame on them. If you want to breastfeed your children because you fear harm to the child, then there is no blame on you if you fulfill what you have given in a fair manner, meaning in exchange for what the child has been breastfed.  

البيهقي:١٥٧٣٨ – وَأَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ أنا عَبْدُ الرَّحْمَنِ بْنُ الْحَسَنِ نا إِبْرَاهِيمُ بْنُ الْحُسَيْنِ نا آدَمُ نا وَرْقَاءُ عَنِ ابْنِ أَبِي نَجِيحٍ عَنْ مُجَاهِدٍ

فِي قَوْلِهِ وَالْوَالِدَاتُ يُرْضِعْنَ أَوْلَادَهُنَّ حَوْلَيْنِ كَامِلَيْنِ قَالَ يَعْنِي الْوَالِدَاتِ الْمُطَلَّقَاتِ لَا تُضَارَّ وَالِدَةٌ بِوَلَدِهَا يَقُولُ لَا تَأْبَى أَنْ تُرْضِعَهُ ضِرَارًا يَشُقُّ عَلَى أَبِيهِ وَلَا مَوْلُودٌ لَهُ بِوَلَدِهِ يَقُولُ وَلَا يُضَارَّ الْوَالِدُ بِوَلَدِهِ فَيَمْنَعُ أُمَّهُ أَنْ تُرْضِعَهُ لِيُحْزِنَهَا بِذَلِكَ وَعَلَى الْوَارِثِ مِثْلُ ذَلِكَ قَالَ يَعْنِي الْوَلِيَّ مَنْ كَانَ فَإِنْ أَرَادَا فِصَالًا عَنْ تَرَاضٍ مِنْهُمَا وَتَشَاوُرٍ غَيْرَ مُسِيئِينَ فِي ظُلْمِ أَنْفُسِهِمَا وَلَا إِلَى صَبِيِّهِمَا دُونَ الْحَوْلَيْنِ فَلَا جُنَاحَ عَلَيْهِمَا وَإِنْ أَرَدْتُمْ أَنْ تَسْتَرْضِعُوا أَوْلَادَكُمْ خِيفَةَ الضَّيْعَةِ عَلَى الصَّبِيِّ فَلَا جُنَاحَ عَلَيْكُمْ إِذَا سَلَّمْتُمْ مَا آتَيْتُمْ بِالْمَعْرُوفِ يَعْنِي بِحِسَابِ مَا أَرْضَعَ الصَّبِيَّ  

See similar narrations below:

Collected by Qurʾān
quran:2:233 –

Mothers may breastfeed their children two complete years for whoever wishes to complete the nursing ˹period˺. Upon the father is the mothers' provision and their clothing according to what is acceptable. No person is charged with more than his capacity. No mother should be harmed through her child, and no father through his child. And upon the ˹father's˺ heir is ˹a duty˺ like that ˹of the father˺. And if they both desire weaning through mutual consent from both of them and consultation, there is no blame upon either of them. And if you wish to have your children nursed by a substitute, there is no blame upon you as long as you give payment according to what is acceptable. And fear Allah and know that Allah is Seeing of what you do.  

Mothers, shall, suckle their children for two full years (kāmilayn, ‘two full ones’, is an adjective for emphasis); this is, for such as desire to fulfil the suckling, and this is the maximum length of time. It is for the father to provide, food for, them, the mothers, and clothe them, during the suckling if they be divorced, honourably, to the best of his ability. No soul is charged save to its capacity, its ability; a mother shall not be harmed by her child, that is, on account of the child, by being forced to suckle it, if she does not want to; neither, should, a father, be harmed, by his child, that is, on account of it, by being charged with more than he is able to bear. The mention of both parents here in relation to the child is intended to show sympathy ˹for both˺. The heir, the one inheriting from his father, that is, the young man who is the trustee of his ˹father’s˺ property, has a similar duty, to that of the father in terms of providing sustenance and clothing for the ˹other˺ parent. But if the two, parents, desire by mutual consent, agreement, and consultation, so that the child’s best interests are clear, to wean, that is, to effect ablactation before the completion of the twoyear period, then they would not be at fault, in this matter. And if you (addressing the parents) desire to seek nursing, from other than the mothers, for your children, you would not be at fault, in this respect, provided you hand over, to them, what you have given, what you intend to give them in the way of wages, honourably, in kindness and good nature; and fear God, and know that God sees what you do, and that nothing of it can be hidden from Him.
القرآن:٢:٢٣٣ –

وَالْوَالِدَاتُ يُرْضِعْنَ أَوْلَادَهُنَّ حَوْلَيْنِ كَامِلَيْنِ ۖ لِمَنْ أَرَادَ أَنْ يُتِمَّ الرَّضَاعَةَ ۚ وَعَلَى الْمَوْلُودِ لَهُ رِزْقُهُنَّ وَكِسْوَتُهُنَّ بِالْمَعْرُوفِ ۚ لَا تُكَلَّفُ نَفْسٌ إِلَّا وُسْعَهَا ۚ لَا تُضَارَّ وَالِدَةٌ بِوَلَدِهَا وَلَا مَوْلُودٌ لَهُ بِوَلَدِهِ ۚ وَعَلَى الْوَارِثِ مِثْلُ ذَٰلِكَ ۗ فَإِنْ أَرَادَا فِصَالًا عَنْ تَرَاضٍ مِنْهُمَا وَتَشَاوُرٍ فَلَا جُنَاحَ عَلَيْهِمَا ۗ وَإِنْ أَرَدْتُمْ أَنْ تَسْتَرْضِعُوا أَوْلَادَكُمْ فَلَا جُنَاحَ عَلَيْكُمْ إِذَا سَلَّمْتُمْ مَا آتَيْتُمْ بِالْمَعْرُوفِ ۗ وَاتَّقُوا اللَّهَ وَاعْلَمُوا أَنَّ اللَّهَ بِمَا تَعْمَلُونَ بَصِيرٌ  

{والوالدات يرضعن} أي ليرضعن {أولادهن حولين} عامين {كاملين} صفة مؤكدة، ذلك {لمن أراد أن يتم الرضاعة} ولا زيادة عليه {وعلى المولود له} أي الأب {رزقهن} إطعام الوالدات {وكسوتهن} على الإرضاع إذا كن مطلقات {بالمعروف} بقدر طاقته {لا تُكلَّفُ نفس إلا وسعها} طاقتها {لا تضار والدة بولدها} أي بسببه بأن تكره على إرضاعه إذا امتنعت {ولا} يضار {مولود له بولده} أي بسببه بأن يكلف فوق طاقته وإضافة الولد إلى كل منهما في الموضعين للاستعطاف {وعلى الوارث} أي وارث الأب وهو الصبي أي على وليه في ماله {مثل ذلك} الذي على الأب للوالدة من الرزق و الكسوة {فأن أرادا} أي الوالدان {فصالا} فطاما له قبل الحولين صادرا {عن تراض} اتفاق {منهما وتشاور} بينهما لتظهر مصلحة الصبي فيه {فلا جناح عليهما} في ذلك {وإن أردتم} خطاب للآباء {أن تسترضعوا أولادكم} مراضع غير الوالدات {فلا جناح عليكم} فيه {إذا سلّمتم} إليهن {ما آتيتم} أي أردتم إيتاءه لهن من الأجرة {بالمعروف} بالجميل كطيب النفس {واتقوا الله واعلموا أن الله بما تعملون بصير} لا يخفى عليه شيء منه.