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:3604f – Yaḥyá b. Mūsá > Abū Dāwud > Ṣadaqah b. Mūsá > Muḥammad b. Wāsiʿ > Sumayr b. Nahār al-ʿAbdī > Abū Hurayrah

“Indeed, having good thoughts concerning Allah is from the perfection of the worship of Allah.”  

الترمذي:٣٦٠٤f – حَدَّثَنَا يَحْيَى بْنُ مُوسَى أَخْبَرَنَا أَبُو دَاوُدَ أَخْبَرَنَا صَدَقَةُ بْنُ مُوسَى أَخْبَرَنَا مُحَمَّدُ بْنُ وَاسِعٍ عَنْ سُمَيْرِ بْنِ نَهَارٍ الْعَبْدِيِّ عَنْ أَبِي هُرَيْرَةَ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ إِنَّ حُسْنَ الظَّنِّ بِاللَّهِ مِنْ حُسْنِ عِبَادَةِ اللَّهِ هَذَا حَدِيثٌ غَرِيبٌ مِنْ هَذَا الْوَجْهِ  

See similar narrations below:

Collected by Aḥmad, Ḥākim, Suyūṭī
ahmad:8709 –

[Machine] And the Messenger of Allah ﷺ said: "Indeed, having good suspicions (good thoughts) is from the excellence of worshipping Allah."  

أحمد:٨٧٠٩ –

وَقَالَ رَسُولُ اللهِ ﷺ إِنَّ حُسْنَ الظَّنِّ مِنْ حُسْنِ عِبَادَةِ اللهِ  

hakim:7604 – ʿAlī b. Ḥamshādh al-ʿAdl > ʿAlī b. ʿAbd al-ʿAzīz al-Baghawī And Than Abū Muslim > Ḥajjāj b. Minhāl > Ḥammād b. Salamah > Muḥammad b. Wāsiʿ > Shutayr b. Nahār > Abū Hurayrah

[Machine] The Prophet ﷺ said, "Verily, having good thoughts about Allah, the Almighty, is a form of worship of Allah."  

الحاكم:٧٦٠٤ – حَدَّثَنَا عَلِيُّ بْنُ حَمْشَاذَ الْعَدْلُ ثَنَا عَلِيُّ بْنُ عَبْدِ الْعَزِيزِ الْبَغَوِيُّ وَثَنًا أَبُو مُسْلِمٍ قَالَا ثَنَا حَجَّاجُ بْنُ مِنْهَالٍ ثَنَا حَمَّادُ بْنُ سَلَمَةَ عَنْ مُحَمَّدِ بْنِ وَاسِعٍ عَنْ شُتَيْرِ بْنِ نَهَارٍ عَنْ أَبِي هُرَيْرَةَ

عَنِ النَّبِيِّ ﷺ قَالَ «إِنَّ حُسْنَ الظَّنِّ بِاللَّهِ تَعَالَى مِنْ عِبَادَةِ اللَّهِ»  

هَذَا حَدِيثٌ صَحِيحٌ عَلَى شَرْطِ مُسْلِمٍ وَلَمْ يُخَرِّجَاهُ على شرط مسلم