Ibn Majah

Benefits and Issues:
➊
The mentioned narration has been declared weak in its chain of transmission by our esteemed researcher.
Other scholars have also classified it as weak.
However, Dr. Bashar Awwad, in his research on Sunan Ibn Majah, writes that although the chain of this narration is weak, its final sentence (وَتَغَنَّوْا بِهِ فَمَنْ لَمْ يَتَغَنَّ بِهِ فَلَيْسَ مِنَّا)
— "And recite the Noble Qur’an with a good voice" — is authentic, because this very issue is narrated from Abu Hurairah (radi Allahu anhu) in Sahih Bukhari,
where the Messenger of Allah (sallallahu alayhi wa sallam) said: (لَيْسَ مِنَّا مَن لَّمْ يَتَغَنَّ بِالْقُرْآنِ)
— "Whoever does not recite the Qur’an with melody is not from us." Therefore, except for this sentence, the rest of the narration is weak in its chain.
For details, see: (Sunan Ibn Majah, by Dr. Bashar Awwad, Hadith: 1337)

➋
There is another meaning to the last sentence of this hadith (وَتَغَنَّوْا بِهِ فَمَنْ لَمْ يَتَغَنَّ),
which has been mentioned by Imam Khattabi.
"Lam yataghanna" means "lam yastaghni" (does not consider himself independent).
That is, whoever, after reciting the Noble Qur’an and acquiring its knowledge, does not become indifferent to seeking worldly gains and other useless sciences, especially frivolous poetry and speech,
then he is not from us. (Ma‘alim as-Sunan 2/138)
The purpose is that a reciter of the Qur’an and a scholar of religion, after attaining this honor, should remain above the accumulation of worldly wealth and futile occupations.