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
suyuti:3716a –

The Prophet ﷺ said: The best of the actions is to love for the sake of Allah and to hate for the sake of Allah. (Using translation from Abū Dāʾūd 4599)   

السيوطي:٣٧١٦a –

"أفضلُ الأعمالِ الحبُّ في الله، والبُغض في الله" .  

[د] أبو داود عن أبي ذَرٍّ

See similar narrations below:

Collected by Abū Dāwūd, Suyūṭī
abudawud:4599 – Musaddad > Khālid b. ʿAbdullāh > Yazīd b. Abū Ziyād > Mujāhid > a man > Abū Dhar

The Prophet ﷺ said: The best of the actions is to love for the sake of Allah and to hate for the sake of Allah.  

أبو داود:٤٥٩٩ – حَدَّثَنَا مُسَدَّدٌ حَدَّثَنَا خَالِدُ بْنُ عَبْدِ اللَّهِ حَدَّثَنَا يَزِيدُ بْنُ أَبِي زِيَادٍ عَنْ مُجَاهِدٍ عَنْ رَجُلٍ عَنْ أَبِي ذَرٍّ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ أَفْضَلُ الأَعْمَالِ الْحُبُّ فِي اللَّهِ وَالْبُغْضُ فِي اللَّهِ