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
tirmidhi:1506 – Aḥmad b. Manīʿ > Hushaym > Ḥajjāj b. Arṭāh > Jabalah b. Suḥaym > a man Saʾal Ibn ʿUmar > al-Uḍḥiyah Awājibah Hī

That a man asked Ibn 'Umar about the Udhiyah, "Is it obligatory?" So he said: "The Messenger of Allah ﷺ performed the Udhiyah as did the Muslims." He repeated the question. So he said: "Do you understand ?" The Messenger of Allah ﷺ slaughtered as did the Muslims."  

الترمذي:١٥٠٦ – حَدَّثَنَا أَحْمَدُ بْنُ مَنِيعٍ حَدَّثَنَا هُشَيْمٌ أَخْبَرَنَا حَجَّاجُ بْنُ أَرْطَاةَ عَنْ جَبَلَةَ بْنِ سُحَيْمٍ أَنَّ رَجُلاً سَأَلَ ابْنَ عُمَرَ عَنِ الأُضْحِيَةِ أَوَاجِبَةٌ هِيَ فَقَالَ

ضَحَّى رَسُولُ اللَّهِ ﷺ وَالْمُسْلِمُونَ فَأَعَادَهَا عَلَيْهِ فَقَالَ أَتَعْقِلُ ضَحَّى رَسُولُ اللَّهِ ﷺ وَالْمُسْلِمُونَ  

قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ وَالْعَمَلُ عَلَى هَذَا عِنْدَ أَهْلِ الْعِلْمِ أَنَّ الأُضْحِيَةَ لَيْسَتْ بِوَاجِبَةٍ وَلَكِنَّهَا سُنَّةٌ مِنْ سُنَنِ رَسُولِ اللَّهِ ﷺ يُسْتَحَبُّ أَنْ يُعْمَلَ بِهَا وَهُوَ قَوْلُ سُفْيَانَ الثَّوْرِيِّ وَابْنِ الْمُبَارَكِ