Al-Bukhārī gave it the following chapter heading:

“Chapter: What Forms of Suspicion Are Permissible.”

I say: The hadith accords with the implication of Allah’s saying: “Indeed, some suspicion is sinful” [al-Ḥujurāt 49:12]—that is, not every suspicion is sinful. For this reason, Shaykh al-Islām Ibn Taymiyyah said in Majmūʿ al-Fatāwā (15/331):

“This hadith indicates that some suspicion is permissible, as al-Bukhārī inferred from it. Yet, in view of the faith possessed by a Muslim, which restrains him from committing immoral acts, one must think well of him rather than ill.”

Some found al-Bukhārī’s chapter heading for the hadith, as cited above, problematic, and said:

“The hadith does not correspond to the chapter heading, for the heading affirms suspicion, whereas the hadith negates it.”

Al-Ḥāfiẓ related this in Fatḥ al-Bārī (10/485), then refuted it, saying:

“The answer is that the negation in the hadith concerns the supposition of negation, not the negation of suspicion itself; thus, there is no contradiction between it and the chapter heading. In sum, a case such as the one mentioned in the hadith is not among the suspicion that has been prohibited, for it occurs in the context of warning against those whose condition resembles that of the two men. The prohibition applies only to ill suspicion of a Muslim whose religious commitment and honour are beyond reproach. Ibn ʿUmar said: ‘Whenever we missed a man at the ʿIshāʾ prayer, we would think ill of him.’ This means that he would not be absent except for some evil reason, whether concerning his body or his religion.”

I say: The report of Ibn ʿUmar was recorded by al-Bazzār (1/228/462 and 463) through two chains from Nāfiʿ, from him; the second chain from him is authentic.