Hadith on Qarin: Everyone has a devil-companion who whispers

Abdullah ibn Mas’ud reported: The Messenger of Allah, peace and blessings be upon him, said, “Each one of you has a devil-companion from the jinn over him.” They said, “Even you, O Messenger of Allah?” The Prophet said, “Even me, yet Allah helped me against him until he embraced Islam. He does not order me to do anything but good.”

Source: Ṣaḥīḥ Muslim 2814

Grade: Sahih (authentic) according to Muslim

عَنْ عَبْدِ اللَّهِ بْنِ مَسْعُودٍ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ مَا مِنْكُمْ مِنْ أَحَدٍ إِلَّا وَقَدْ وُكِّلَ بِهِ قَرِينُهُ مِنْ الْجِنِّ قَالُوا وَإِيَّاكَ يَا رَسُولَ اللَّهِ قَالَ وَإِيَّايَ إِلَّا أَنَّ اللَّهَ أَعَانَنِي عَلَيْهِ فَأَسْلَمَ فَلَا يَأْمُرُنِي إِلَّا بِخَيْرٍ

2814 صحيح مسلم كتاب صفة القيامة والجنة والنار باب تحريش الشيطان وبعثه سراياه لفتنة الناس وأن مع كل إنسان قرينا