Allah says in the Quran
114:5
ٱلَّذِى يُوَسْوِسُ فِى صُدُورِ ٱلنَّاسِ
Who whispers in the breasts of mankind,
114:6
مِنَ ٱلْجِنَّةِ وَٱلنَّاسِ
Of jinns and
men."
In Surah Ana'm, Allah Subhanahu Wa Taa'la says:
6:112
وَكَذَٰلِكَ جَعَلْنَا لِكُلِّ نَبِىٍّ عَدُوًّا شَيَٰطِينَ ٱلْإِنسِ وَٱلْجِنِّ يُوحِى بَعْضُهُمْ إِلَىٰ بَعْضٍ زُخْرُفَ ٱلْقَوْلِ غُرُورًا وَلَوْ شَآءَ رَبُّكَ مَا فَعَلُوهُ فَذَرْهُمْ وَمَا يَفْتَرُونَ
And so We have appointed for every Prophet enemies - Shayatin (devils) among
mankind and jinns, inspiring one another with adorned speech as a delusion (or by way of deception). If your Lord had so willed, they would not have done it, so leave them alone with their fabrications.
From above verses, we come to know that devils are from jinns as well as from human race.
It was narrated that Abu Dharr said:
"I entered the Masjid and the Messenger of Allah [Peace be upon him] was there, so I came and sat before him and he said: 'O Abu Dharr, seek refuge with Allah from the evils of the devils among the Jinn and
mankind.'
I said: 'Are there devils among mankind?' He said: 'Yes.'"
أَخْبَرَنَا أَحْمَدُ بْنُ سُلَيْمَانَ، قَالَ حَدَّثَنَا جَعْفَرُ بْنُ عَوْنٍ، قَالَ حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ عَبْدِ اللَّهِ، عَنْ أَبِي عُمَرَ، عَنْ عُبَيْدِ بْنِ خَشْخَاشٍ، عَنْ أَبِي ذَرٍّ، قَالَ دَخَلْتُ الْمَسْجِدَ وَرَسُولُ اللَّهِ صلى الله عليه وسلم فِيهِ فَجِئْتُ فَجَلَسْتُ إِلَيْهِ فَقَالَ " يَا أَبَا ذَرٍّ تَعَوَّذْ بِاللَّهِ مِنْ شَرِّ شَيَاطِينِ الْجِنِّ وَالإِنْسِ " . قُلْتُ أَوَلِلإِنْسِ شَيَاطِينُ قَالَ " نَعَمْ " .
Reference: Sunan an-Nasa'i 5507
In-book reference: Book 50, Hadith 0
English translation: Vol. 6, Book 50, Hadith 5509
https://sunnah.com/urn/1154920
Same hadith is also reported by Imam Ahmad and Abu Hatim.
And Allah knows the best!
May Allah make things easy for us and save us from the whispers of devils among the Jinn & mankind. Ameen!
Ma'aSalaam