In the name of Allah, the Most Gracious, the Most Merciful

ʿĪd al-Aḍḥā (In the Light of Ḥadīth)

    Buraydah (may Allah be pleased with him) narrated that it was the practice of the Messenger of Allah ﷺ that he would eat something before going for the prayer of ʿĪd al-Fiṭr, and on the day of ʿĪd al-Aḍḥā he would not eat anything until after performing the prayer.
    (Jāmiʿ al-Tirmidhī, Sunan Ibn Mājah)

    Jābir (may Allah be pleased with him) narrated that on the day of ʿĪd, the Messenger of Allah ﷺ would take a different route when returning.
    (Ṣaḥīḥ al-Bukhārī)

    ʿĀʾishah al-Ṣiddīqah (may Allah be pleased with her) narrated that the Messenger of Allah ﷺ said: “On the tenth day of Dhū al-Ḥijjah, the day of ʿĪd al-Aḍḥā, no deed of the son of Ādam is more beloved to Allah than the offering of sacrifice. The sacrificial animal will come on the Day of Resurrection with its horns, hair, and hooves, and the blood of the sacrifice reaches a station of acceptance with Allah before it falls upon the ground. Therefore, O servants of Allah, perform the sacrifice with a contented heart.”
    (Jāmiʿ al-Tirmidhī, Sunan Ibn Mājah)

    Ḥanash ibn ʿAbdullāh narrated that he saw ʿAlī al-Murtaḍā (may Allah be pleased with him) offering the sacrifice of two rams. He said: I asked him, “What is this (why do you offer two rams instead of one)?” He replied: “The Messenger of Allah ﷺ instructed me to offer a sacrifice on his behalf as well, so I offer one on his behalf.”
    (Jāmiʿ al-Tirmidhī)

    Anas (may Allah be pleased with him) narrated that the Messenger of Allah ﷺ sacrificed two rams with black and white markings. He slaughtered them with his own blessed hands and recited: “Bismi Allāhi wa-Allāhu akbar.” I saw that he placed his foot upon their sides and continued reciting: “Bismi Allāhi wa-Allāhu akbar.”
    (Ṣaḥīḥ al-Bukhārī, Ṣaḥīḥ Muslim)

    Al-Barāʾ ibn ʿĀzib (may Allah be pleased with him) narrated that the Messenger of Allah ﷺ was asked about the animals that should be avoided in sacrifice (that is, the defects which render an animal unfit for sacrifice). He gestured with his hand and said: “Four (defects render an animal unsuitable): a clearly lame animal whose lameness is evident; one whose eye is defective and the defect is apparent; one that is seriously ill; and one that is extremely weak and emaciated such that there is no marrow in its bones.”
    (Jāmiʿ al-Tirmidhī, Sunan Ibn Mājah)

    Jundub ibn ʿAbdullāh (may Allah be pleased with him) narrated: I was present with the Messenger of Allah ﷺ on the day of ʿĪd al-Aḍḥā. When he completed the prayer, he noticed that some sacrifices had already been slaughtered before the prayer. He said: “Whoever slaughtered before the prayer should offer another sacrifice in its place.”
    (Ṣaḥīḥ al-Bukhārī, Ṣaḥīḥ Muslim)

    Ibn ʿAbbās (may Allah be pleased with him) narrated that the Messenger of Allah ﷺ said: “No righteous deeds are more beloved to Allah than those performed during these ten days.”
    (Ṣaḥīḥ al-Bukhārī)

    Umm al-Muʾminīn Umm Salamah (may Allah be pleased with her) narrated that the Messenger of Allah ﷺ said: “When the first ten days of Dhū al-Ḥijjah begin and one of you intends to offer a sacrifice, he should not cut any of his hair or nails until he performs the sacrifice.”
    (Ṣaḥīḥ Muslim)