Note that the authors of sunnah.com for some strange reasons didn't translate the introductions of the subtitles or subsections in sahih al-Bukhari. They only translated the ahadith which are counted and usually commented by hadith commentators.
As it is there where al-Bukhari mentions some words of wisdom or verses etc. (not necessary ahadith).
For example as posted by @goldPseudo you will find your quotes among the Arabic text in (2/41) let's take a closer look at it:
وَقَالَ ابْنُ أَبِي مُلَيْكَةَ أَدْرَكْتُ ثَلاَثِينَ مِنْ أَصْحَابِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ كُلُّهُمْ يَخَافُ النِّفَاقَ عَلَى نَفْسِهِ، مَا مِنْهُمْ أَحَدٌ يَقُولُ إِنَّهُ عَلَى إِيمَانِ جِبْرِيلَ وَمِيكَائِيلَ. [تحفة 15613 ب].
Ibn Abi Mulayka said: 'I met thirty companions of the Prophet (S.A.W.) and each one of them feared hypocrisy within himself. Not one of them could claim to believe in Gabriel or Michael (In sunnah.com they quoted as a source: Tuhfah تحفة 15613 ba' (b) instead of volume 1, page 97).’”
Here other translations:
Ibn Abi Mulaykah said: I met thirty of the companions of the Prophet (peace and blessings of Allaah be upon him) all of whom feared that they might be guilty of hypocrisy, and not one of them said that his faith was like that of Jibreel and Mika’eel. (source the fatwa from islamqa)
or
Ibn Abi Mulaykah said: I met thirty of the companions of the Prophet (peace and blessings of Allaah be upon him) all of whom feared that they might be guilty of hypocrisy, andNot one of them could claim to be at the same level of belief as Gabriel or Michael"
And a third word of wisdom which might not have been quoted in your source:
وَيُذْكَرُ عَنِ الْحَسَنِ مَا خَافَهُ إِلاَّ مُؤْمِنٌ، وَلاَ أَمِنَهُ إِلاَّ مُنَافِقٌ. وَمَا يُحْذَرُ مِنَ الإِصْرَارِ عَلَى النِّفَاقِ وَالْعِصْيَانِ مِنْ غَيْرِ تَوْبَةٍ لِقَوْلِ اللَّهِ تَعَالَى: {وَلَمْ يُصِرُّوا عَلَى مَا فَعَلُوا وَهُمْ يَعْلَمُونَ}.
It was narrated from al-Hasan: No one fears it (hypocrisy) but a believer and no one feels safe from it but a hypocrite. And one should be afraid of persisting in hypocrisy and sin without repenting, because Allaah says (interpretation of the meaning): “and [they] do not persist in what (wrong) they have done, while they know” (Aal ‘Imraan 3:135). (Source of the translation: fatwa islamqa #81874)
- Now they quote the ahadith and their translation (without full sanad=narrator chain):
Narrated 'Abdullah:
The Prophet (ﷺ) said, "Abusing a Muslim is Fusuq (an evil doing) and killing him is Kufr (disbelief)."
حَدَّثَنَا مُحَمَّدُ بْنُ عَرْعَرَةَ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ زُبَيْدٍ، قَالَ سَأَلْتُ أَبَا وَائِلٍ عَنِ الْمُرْجِئَةِ،، فَقَالَ حَدَّثَنِي عَبْدُ اللَّهِ، أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ " سِبَابُ الْمُسْلِمِ فُسُوقٌ، وَقِتَالُهُ كُفْرٌ ".
so this is basically how they do. Note also that in sunnah.com they often leave out many useful commentaries of imam at-Tirmidhi, as he often quotes a hadith and then quotes opinions of fiqh or discusses the sanad etc. of the narration. If I have time I could point you to some of my answers where I needed to refer to such statements and needed to translate them myself.
Here examples of left out translations from the original hadith collections, where I needed to translate or at least give a summary of them myself:
Examples of scholarly opinions in jami' at-Tirmidhi:
Examples of not yet translated ahdith and quotes:
As the translations on sunnah.com are a work in progress, I hope that one day they might add these helpful comments too.