I heard Allah's Apostle ﷺ as saying: Verily, the Satan has lost all hopes that the worshippers would ever worship (him) in the peninsula of Arabia, but he (is hopeful) that he would sow the seed of dissension amongst them.  

سَمِعْتُ النَّبِيَّ ﷺ يَقُولُ إِنَّ الشَّيْطَانَ قَدْ أَيِسَ أَنْ يَعْبُدَهُ الْمُصَلُّونَ فِي جَزِيرَةِ الْعَرَبِ وَلَكِنْ فِي التَّحْرِيشِ بَيْنَهُمْ  

This hadith has been narrated on the authority of A'mash with the same chain of transmitters.  

عَنِ الأَعْمَشِ بِهَذَا الإِسْنَادِ  

I heard Messenger of Allah (way peace be upon him) as saying: The throne of Iblis is upon the ocean and he sends detachments (to different parts) inorder to put people to trial and the most important figure in his eyes is one who is most notorious in sowing the seed of dissension.  

سَمِعْتُ النَّبِيَّ ﷺ يَقُولُ إِنَّ عَرْشَ إِبْلِيسَ عَلَى الْبَحْرِ فَيَبْعَثُ سَرَايَاهُ فَيَفْتِنُونَ النَّاسَ فَأَعْظَمُهُمْ عِنْدَهُ أَعْظَمُهُمْ فِتْنَةً  

Iblis places his throne upon water; he then sends detachments (for creating dissension) ; the nearer to him in rank are those who are most notorious in creating dissension. One of them comes and says: "I did so and so." And he says: "You have done nothing." Then one amongst them comes and says: "I did not spare so and so until I sowed the seed of discord between a husband and a wife." The Satan goes near him and says: "You have done well." A'mash said: He then embraces him.  

قَالَ رَسُولُ اللَّهِ ﷺ إِنَّ إِبْلِيسَ يَضَعُ عَرْشَهُ عَلَى الْمَاءِ ثُمَّ يَبْعَثُ سَرَايَاهُ فَأَدْنَاهُمْ مِنْهُ مَنْزِلَةً أَعْظَمُهُمْ فِتْنَةً يَجِيءُ أَحَدُهُمْ فَيَقُولُ فَعَلْتُ كَذَا وَكَذَا فَيَقُولُ مَا صَنَعْتَ شَيْئًا قَالَ ثُمَّ يَجِيءُ أَحَدُهُمْ فَيَقُولُ مَا تَرَكْتُهُ حَتَّى فَرَّقْتُ بَيْنَهُ وَبَيْنَ امْرَأَتِهِ قَالَ فَيُدْنِيهِ مِنْهُ وَيَقُولُ نِعْمَ أَنْتَ قَالَ الأَعْمَشُ أُرَاهُ قَالَ فَيَلْتَزِمُهُ  

The Satan sends detachments of his own in order to put people to trial and the highest in rank, in his eyes, is one who is most notorious in sowing the seed of dissension.  

أَنَّهُ سَمِعَ النَّبِيَّ ﷺ يَقُولُ يَبْعَثُ الشَّيْطَانُ سَرَايَاهُ فَيَفْتِنُونَ النَّاسَ فَأَعْظَمُهُمْ عِنْدَهُ مَنْزِلَةً أَعْظَمُهُمْ فِتْنَةً  

There is none amongst you with whom is not an attache from amongst the jinn (devil). They (the Companions) said: Messenger of Allah, with you too? Thereupon he said: Yes, but Allah helps me against him and so I am safe from his hand and he does not command me but for good.  

قَالَ رَسُولُ اللَّهِ ﷺ مَا مِنْكُمْ مِنْ أَحَدٍ إِلاَّ وَقَدْ وُكِّلَ بِهِ قَرِينُهُ مِنَ الْجِنِّ قَالُوا وَإِيَّاكَ يَا رَسُولَ اللَّهِ قَالَ وَإِيَّاىَ إِلاَّ أَنَّ اللَّهَ أَعَانَنِي عَلَيْهِ فَأَسْلَمَ فَلاَ يَأْمُرُنِي إِلاَّ بِخَيْرٍ  

This hadith has been narrated on the authority of Mansiir with the same chain of transmitters but with a slight variation of wording.  

عَنْ مَنْصُورٍ بِإِسْنَادِ جَرِيرٍ مِثْلَ حَدِيثِهِ غَيْرَ أَنَّ فِي حَدِيثِ سُفْيَانَ وَقَدْ وُكِّلَ بِهِ قَرِينُهُ مِنَ الْجِنِّ وَقَرِينُهُ مِنَ الْمَلاَئِكَةِ  

A'isha, what has happened to you? Do you feel jealous? Thereupon she said: How can it be (that a woman like me) should not feel jealous in regard to a husband like you. Thereupon Messenger of Allah ﷺ said: It was your devil who had come to you, and she said: Messenger of Allah, is there along with me a devil? He said: Yes. I said: Is a devil attached to everyone? He said: Yes. I (Aisha) again said: Messenger of Allah, is it with you also? He said: Yes, but my Lord has helped me against him and as such I am absolutely safe from his mischief.  

أَنَّ عَائِشَةَ زَوْجَ النَّبِيِّ ﷺ حَدَّثَتْهُ أَنَّ رَسُولَ اللَّهِ ﷺ خَرَجَ مِنْ عِنْدِهَا لَيْلاً قَالَتْ فَغِرْتُ عَلَيْهِ فَجَاءَ فَرَأَى مَا أَصْنَعُ فَقَالَ مَا لَكِ يَا عَائِشَةُ أَغِرْتِ فَقُلْتُ وَمَا لِي لاَ يَغَارُ مِثْلِي عَلَى مِثْلِكَ فَقَالَ رَسُولُ اللَّهِ ﷺ أَقَدْ جَاءَكِ شَيْطَانُكِ قَالَتْ يَا رَسُولَ اللَّهِ أَوَمَعِيَ شَيْطَانٌ قَالَ نَعَمْ قُلْتُ وَمَعَ كُلِّ إِنْسَانٍ قَالَ نَعَمْ قُلْتُ وَمَعَكَ يَا رَسُولَ اللَّهِ قَالَ نَعَمْ وَلَكِنْ رَبِّي أَعَانَنِي عَلَيْهِ حَتَّى أَسْلَمَ