Bukhari

Hadith Commentary:
Hafiz said: I have not come to know the names of these two individuals, but from the narration of Imam Ahmad and Bukhari in "Al-Adab Al-Mufrad," it appears that the one who praised was Mihjan bin Awrah, and the one who was praised was perhaps Abdullah bin Dhul-Bijadayn.
(Wahidi)

Hadith Commentary:
(1)
To exaggerate in someone's praise is the practice of foolish poets and flatterers. Such praise causes the other person to become arrogant, and in fact, by falling into compounded ignorance, he becomes deprived of both worldly and religious virtues. This is precisely his destruction and breaking of his back. Accordingly, it is mentioned in the hadith that when a person began to praise Uthman radi Allahu anhu in his presence, Miqdad ibn Aswad radi Allahu anhu picked up some soil and threw it in his face and said that the Messenger of Allah sallallahu alayhi wa sallam said:
“When you encounter people who are given to praise and flattery, throw dust in their faces.”
(Sunan Abi Dawud, Al-Adab, Hadith: 4804) (2)
If, while encouraging someone, one gives appropriate praise for his good deed, then insha Allah it is permissible; there is no restriction on this. In fact, at times, doing so becomes necessary.
And Allah knows best.

Hadith Commentary:

Since the discussion here concerns the declaration of uprightness (ta'dil) and commendation (tazkiyah) of a witness, it is therefore clarified that to exceed the bounds in praising someone, and to praise someone in their presence, is also blameworthy in the Shari‘ah. This is because there is a possibility that such praise may give rise to conceit, self-admiration, and arrogance in the heart of the one who hears it.

Therefore, there should never be exaggeration in praise, nor should praise be offered to someone’s face. And regarding this matter, whatever information is possessed should not be added to—safety lies in this.

Hadith Commentary:
If a person is excessively praised in his presence, he becomes susceptible to arrogance and self-admiration, and, falling into pride and conceit, begins to consider himself worthy of exaggerated praise. In this way, he becomes ensnared by the deception of Shaytan. For this reason, the Messenger of Allah (sallallahu alayhi wa sallam) has prohibited excessive praise. However, there is no harm in praising someone in accordance with what one truly knows about him.
In this way, reconciliation between the two narrations reported from Abu Bakrah and Abu Musa al-Ash'ari (radi Allahu anhuma) is possible.
And Allah knows best.

Hadith Commentary:
Vocabulary of the Hadith:
(1)
Yutrihi:
To exaggerate in praise.
(2)
Al-Madhah:
Praise and commendation.