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
abudawud:3780 – Hārūn b. ʿAbdullāh > Abū Dāwud > Zuhayr > Abū Isḥāq > Saʿd b. ʿIyāḍ > ʿAbdullāh b. Masʿūd

The bone dearer to the Messenger of Allah ﷺ was the bone of sheep.  

أبو داود:٣٧٨٠ – حَدَّثَنَا هَارُونُ بْنُ عَبْدِ اللَّهِ حَدَّثَنَا أَبُو دَاوُدَ عَنْ زُهَيْرٍ عَنْ أَبِي إِسْحَاقَ عَنْ سَعْدِ بْنِ عِيَاضٍ عَنْ عَبْدِ اللَّهِ بْنِ مَسْعُودٍ قَالَ

كَانَ أَحَبَّ الْعُرَاقِ إِلَى رَسُولِ اللَّهِ ﷺ عُرَاقُ الشَّاةِ  

See similar narrations below:

Collected by Nasāʾī's Kubrá
nasai-kubra:6620 – Hārūn b. ʿAbdullāh > Abū Dāwud > Zuhayr > Abū Isḥāq > Saʿd b. ʿIyāḍ > ʿAbdullāh

The bone dearer to the Messenger of Allah ﷺ was the bone of sheep. (Using translation from Abū Dāʾūd 3780)  

الكبرى للنسائي:٦٦٢٠ – أَخْبَرَنِي هَارُونُ بْنُ عَبْدِ اللهِ عَنْ أَبِي دَاوُدَ قَالَ حَدَّثَنَا زُهَيْرٌ عَنْ أَبِي إِسْحَاقَ عَنْ سَعْدِ بْنِ عِيَاضٍ عَنْ عَبْدِ اللهِ قَالَ

«كَانَ أَحَبُّ الْعُرَاقِ إِلَى رَسُولِ اللهِ ﷺ عُرَاقَ الشَّاةِ»