Mu'jam al-Saghir

Hadith Commentary:
That is why it is said, "Innamal a‘malu bikhawatimiha" — the value of deeds is based on their conclusion (i.e., the final state).
May Allah, the Most Pure, grant every Muslim, every reader of Sahih al-Bukhari, and this insignificant, sinful servant a good ending (khatimah bil-khayr), so that our end is upon tawhid, the Sunnah, and the pure testimony of faith (kalimah tayyibah).
It is hoped that at this point all esteemed readers will say Ameen. Ameen.
O Lord of the worlds!

Hadith Commentary:
(1)
A person, by speaking the truth continuously, becomes accustomed to truthfulness and acquires mastery over it, to the extent that he attains the rank of "sidq" (truthfulness), which is the level just below prophethood. On the other hand, a person who becomes accustomed to lying is written as a liar (kadhdhab) in the sight of Allah, and the notion of his being a liar is cast upon all of creation.

(2)
Among the teachings upon which the Messenger of Allah (sallallahu alayhi wa sallam) based his call was the adoption of truthfulness. Thus, Abu Sufyan (radi Allahu anhu) admitted to this in the court of Heraclius (see: Sahih al-Bukhari, Book of Revelation, Hadith: 7).
Furthermore, the Prophet (sallallahu alayhi wa sallam) said:
"Faith and disbelief, truth and falsehood, and trustworthiness and betrayal cannot be combined in the heart of a Muslim."
(Musnad Ahmad: 2/349)

Explanation:
1:
It is understood that one should always avoid lying and adopt truthfulness, because the consequence of lying is Hell and the consequence of truthfulness is Paradise.

Benefits and Issues:
Truth and falsehood (sidq wa kidhb) are not limited only to the words of the tongue; rather, their scope extends to actions and intentions as well.
From an intellectual perspective, if a person is a seeker of truth and acts according to it, and avoids its opposite, then this is a great virtue.
Otherwise, sooner or later, he will not be able to escape disgrace.

Takhrij:
«أخرجه البخاري، الأدب، باب قول الله تعالي: "يأيها الذين آمنوا اتقوا الله"، حديث:6094، ومسلم، البر والصلة، باب قبح الكذب...، حديث:2607.»©Explanation:
In this hadith, there is an indication towards the good end (husn al-khatimah) of the one who speaks the truth, and that he is safe and protected from a bad outcome.