Maulana Dawood Raz
Hadith Commentary: For most people, swearing oaths becomes a habitual manner of speech. Such a habit is not good; however, there is no expiation (kaffarah) for vain (laghw) oaths, as is the meaning of the Qur'anic verse.
Source: Sahih Bukhari: Commentary by Maulana Dawood Raz, Page: 6663
Shaykh Abdul Sattar al-Hammad
Hadith Commentary:
(1)
In this hadith, Aisha (radi Allahu anha) has explained the meaning of "laghw oath" (meaningless oath).
In one narration, the Messenger of Allah (sallallahu alayhi wa sallam) said:
“A ‘laghw oath’ is when a person, in his house, spontaneously says ‘No, by Allah’ or ‘Yes, by Allah’.”
(Sunan Abi Dawud, Book of Oaths and Vows, Hadith: 3254, after Hadith: 3324)
However, Imam Abu Dawud (rahimahullah) has also indicated the difference of opinion regarding whether this narration is marfu‘ (attributed to the Prophet) or mawquf (attributed to a Companion).
(2)
In any case, Imam Bukhari (rahimahullah) has established regarding the "laghw oath" that there is no accountability for it, nor is there any expiation (kaffarah) required for it.
We have already explained the reality of the "laghw oath" earlier.
Its clarification is present there.
In any case, for some people, it is a habitual expression that during conversation, without intention or purpose, they take oaths as a matter of habit. Although this habit is not good, there is neither any sin nor expiation in it.
And Allah knows best.
Source: Hidayat al-Qari: Commentary on Sahih Bukhari, Urdu, Page: 6663