Allah's Messenger (ﷺ) said to us, "Honesty descended from the Heavens and settled in the roots of the hearts of men (faithful believers), and then the Qur'an was revealed and the people read the Qur'an, (and learnt it from it) and also learnt it from the Sunna." Both Qur'an and Sunna strengthened their (the faithful believers') honesty. (See Hadith No. 208)
Sahih al-Bukhari Book 96, Hadith 9
← Previous Hadith I sat with Shaiba in this Mosque (Al-Masjid-Al-Haram), and he said, "`Umar once sat beside me here as you are now sitting, and said, 'I feel like distributing all the gold and silver that are in it (i.e., the Ka`ba) among the Muslims'. I said, 'You cannot do that.' `Umar said, 'Why?' I said, 'Your two (previous) companions (the Prophet (ﷺ) and Abu Bakr) did not do it. `Umar said, 'They are the two persons whom one must follow.'" (See Hadith No. 664, Vol. 2)

Sahih al-Bukhari Book 96, Hadith 8 Next Hadith → 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).

Sahih al-Bukhari Book 96, Hadith 10