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:21292 – Abū ʿAbdullāh al-Ḥāfiẓ > Abū al-Walīd > ʿAbdullāh b. Muḥammad > Abū ʿAbdullāh / Muḥammad b. Naṣr > Yaḥyá b. Yaḥyá > Abū Muʿāwiyah > Ashʿath > al-Ḥasan > ʿUmar

[Machine] Umar said, "The child belongs to the Muslim parent."  

البيهقي:٢١٢٩٢ – أَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ أنبأ أَبُو الْوَلِيدِ ثنا عَبْدُ اللهِ بْنُ مُحَمَّدٍ قَالَ قَالَ أَبُو عَبْدِ اللهِ يَعْنِي مُحَمَّدَ بْنَ نَصْرٍ ثنا يَحْيَى بْنُ يَحْيَى أنبأ أَبُو مُعَاوِيَةَ عَنْ أَشْعَثَ عَنِ الْحَسَنِ قَالَ

قَالَ عُمَرُ ؓ الْوَلَدُ لِلْوَالِدِ الْمُسْلِمِ  

See similar narrations below:

Collected by Nasāʾī's Kubrá, Suyūṭī
nasai-kubra:6511 – Muḥammad b. ʿAbdullāh b. Yazīd > Sufyān > Ibn Ṭāwus from his father > Ḥujr al-Madarī > Zayd

"The Messenger of Allah said: 'Umra (a gift given for life) is for the heir.'" (Using translation from Nasāʾī 3716)   

الكبرى للنسائي:٦٥١١ – أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ اللهِ بْنِ يَزِيدَ قَالَ حَدَّثَنَا سُفْيَانُ عَنِ ابْنِ طَاوُسٍ عَنْ أَبِيهِ عَنْ حُجْرٍ الْمَدَرِيِّ عَنْ زَيْدٍ قَالَ

قَالَ رَسُولُ اللهِ ﷺ «الْعُمْرَى لِلْوَارِثِ»