Discussing al-Bukhari’s understanding of the texts, specifically in his chapter headings

The Shaykh : Among the most subtle things I have seen in the understanding of texts is al-Bukhari (may Allah have mercy on him). His chapter headings for the hadiths are such that a person may be unable to determine the reason for his citation of a particular hadith, especially if there is no hadith in that chapter that meets his conditions. This is because he sometimes mentions a heading as a reference to a hadith that does not meet his conditions, and then he brings a similar hadith. People differ greatly in this regard.