The Messenger of Allah ﷺ said to me: 'Abd al-Rahman, do not ask for a position of authority, for if you are granted this position as a result of your asking for it, you will be left alone (without God's help to discharge the responsibilities attendant thereon), and it you are granted it without making any request for it, you will be helped (by God in the discharge of your duties).  

لِي رَسُولُ اللَّهِ ﷺ يَا عَبْدَ الرَّحْمَنِ لاَ تَسْأَلِ الإِمَارَةَ فَإِنَّكَ إِنْ أُعْطِيتَهَا عَنْ مَسْأَلَةٍ أُكِلْتَ إِلَيْهَا وَإِنْ أُعْطِيتَهَا عَنْ غَيْرِ مَسْأَلَةٍ أُعِنْتَ عَلَيْهَا  

The same tradition has been narrated through a different chain of transmitters.  

عَنِ النَّبِيِّ ﷺ بِمِثْلِ حَدِيثِ جَرِيرٍ  

Two of my cousins and I entered the apartment of the Prophet ﷺ. One of them said: Messenger of Allah, appoint us rulers of some lands that the Almighty and Glorious God has entrusted to thy care. The other also said something similar. He said: We do not appoint to this position one who asks for it nor anyone who is covetous for the same.  

دَخَلْتُ عَلَى النَّبِيِّ ﷺ أَنَا وَرَجُلاَنِ مِنْ بَنِي عَمِّي فَقَالَ أَحَدُ الرَّجُلَيْنِ يَا رَسُولَ اللَّهِ أَمِّرْنَا عَلَى بَعْضِ مَا وَلاَّكَ اللَّهُ ﷻ وَقَالَ الآخَرُ مِثْلَ ذَلِكَ فَقَالَ إِنَّا وَاللَّهِ لاَ نُوَلِّي عَلَى هَذَا الْعَمَلِ أَحَدًا سَأَلَهُ وَلاَ أَحَدًا حَرَصَ عَلَيْهِ  

I went to the Prophet ﷺ and with me were two men from the Ash'ari tribe. One of them was on my right hand and the other on my left. Both of them made a request for a position (of authority) while the Prophet ﷺ was brushing his teeth with a tooth-stick. He said (to me): Abu Musa (or 'Abdullah b. Qais), what do you say (about the request they have made)? I said: By God Who sent thee on thy mission with truth, they did not disclose to me what they had in their minds, and I did not know that they would ask for a position. The narrator says (while recalling this hadith): I visualise as if I were looking at the miswak of the Prophet ﷺ between his lips. He (the Holy Prophet) said: We shall not or shall never appoint to the public offices (in our State) those who with to have them, but you may go, Abu Musa (or Abdullah b. Qais) (to take up your assignment). He sent him to Yemen as governor. then he sent Mu'adh b. jabal in his wake (to help him in the discharge of duties). When Mu'adh reached the camp of Abu Musa, the latter (received him and) said: Please get yourself down; and he spread for him a mattress, while there was a man bound hand and foot as a prisoner. Mu'adh said: Who is this? Abu Musa said: He was a Jew. He embraced Islam. Then he reverted to his false religion and became a Jew. Mu'adh said: I won't sit until he is killed according to the decree of Allah and His Apostle ﷺ (in this case). Abu Musa said: Be seated. It will be done. He said: I won't sit unless he is killed in accordance with the decree of Allah and His Apostle ﷺ. He repeated these words thrice. Then Abu Musa ordered him (to be killed) and he was kilied. Then the two talked of standing in prayer at night. One of them, i. e. Mu'adh, said: I sleep (for a part of the night) and stand in prayer (for a part) and I hope that I shall get the same reward for steeping as I shall get for standing (in prayer).  

أَبُو مُوسَى أَقْبَلْتُ إِلَى النَّبِيِّ ﷺ وَمَعِي رَجُلاَنِ مِنَ الأَشْعَرِيِّينَ أَحَدُهُمَا عَنْ يَمِينِي وَالآخَرُ عَنْ يَسَارِي فَكِلاَهُمَا سَأَلَ الْعَمَلَ وَالنَّبِيُّ ﷺ يَسْتَاكُ فَقَالَ مَا تَقُولُ يَا أَبَا مُوسَى أَوْ يَا عَبْدَ اللَّهِ بْنَ قَيْسٍ قَالَ فَقُلْتُ وَالَّذِي بَعَثَكَ بِالْحَقِّ مَا أَطْلَعَانِي عَلَى مَا فِي أَنْفُسِهِمَا وَمَا شَعَرْتُ أَنَّهُمَا يَطْلُبَانِ الْعَمَلَ قَالَ وَكَأَنِّي أَنْظُرُ إِلَى سِوَاكِهِ تَحْتَ شَفَتِهِ وَقَدْ قَلَصَتْ فَقَالَ لَنْ أَوْ لاَ نَسْتَعْمِلُ عَلَى عَمَلِنَا مَنْ أَرَادَهُ وَلَكِنِ اذْهَبْ أَنْتَ يَا أَبَا مُوسَى أَوْ يَا عَبْدَ اللَّهِ بْنَ قَيْسِ فَبَعَثَهُ عَلَى الْيَمَنِ ثُمَّ أَتْبَعَهُ مُعَاذَ بْنَ جَبَلٍ فَلَمَّا قَدِمَ عَلَيْهِ قَالَ انْزِلْ وَأَلْقَى لَهُ وِسَادَةً وَإِذَا رَجُلٌ عِنْدَهُ مُوثَقٌ قَالَ مَا هَذَا قَالَ هَذَا كَانَ يَهُودِيًّا فَأَسْلَمَ ثُمَّ رَاجَعَ دِينَهُ دِينَ السَّوْءِ فَتَهَوَّدَ قَالَ لاَ أَجْلِسُ حَتَّى يُقْتَلَ قَضَاءُ اللَّهِ وَرَسُولِهِ فَقَالَ اجْلِسْ نَعَمْ قَالَ لاَ أَجْلِسُ حَتَّى يُقْتَلَ قَضَاءُ اللَّهِ وَرَسُولِهِ ثَلاَثَ مَرَّاتٍ فَأَمَرَ بِهِ فَقُتِلَ ثُمَّ تَذَاكَرَا الْقِيَامَ مِنَ اللَّيْلِ فَقَالَ أَحَدُهُمَا مُعَاذٌ أَمَّا أَنَا فَأَنَامُ وَأَقُومُ وَأَرْجُو فِي نَوْمَتِي مَا أَرْجُو فِي قَوْمَتِي