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
bukhari:6098 – Abū al-Walīd > Shuʿbah > Mukhāriq > Ṭāriq

ʿAbdullah said, "The best talk is Allah's Book (Qur'an), and the best guidance is the guidance of Muhammad."  

البخاري:٦٠٩٨ – حَدَّثَنَا أَبُو الْوَلِيدِ حَدَّثَنَا شُعْبَةُ عَنْ مُخَارِقٍ سَمِعْتُ طَارِقًا قَالَ قَالَ

عَبْدُ اللَّهِ إِنَّ أَحْسَنَ الْحَدِيثِ كِتَابُ اللَّهِ وَأَحْسَنَ الْهَدْىِ هَدْىُ مُحَمَّدٍ ﷺ  

See similar narrations below:

Collected by Bukhārī
bukhari:7277 – Ādam b. Abū Iyās > Shuʿbah > ʿAmr b. Murrah > Murrah al-Hamdānī

The best talk (speech) is Allah's Book 'Qur'an), and the best way is the way of Muhammad, and the worst matters are the heresies (those new things which are introduced into the religion); and whatever you have been promised will surely come to pass, and you cannot escape (it).  

البخاري:٧٢٧٧ – حَدَّثَنَا آدَمُ بْنُ أَبِي إِيَاسٍ حَدَّثَنَا شُعْبَةُ أَخْبَرَنَا عَمْرُو بْنُ مُرَّةَ سَمِعْتُ مُرَّةَ الْهَمْدَانِيَّ يَقُولُ قَالَ

عَبْدُ اللَّهِ إِنَّ أَحْسَنَ الْحَدِيثِ كِتَابُ اللَّهِ وَأَحْسَنَ الْهَدْىِ هَدْىُ مُحَمَّدٍ ﷺ وَشَرَّ الأُمُورِ مُحْدَثَاتُهَا وَإِنَّ مَا تُوعَدُونَ لآتٍ وَمَا أَنْتُمْ بِمُعْجِزِينَ