Wiping over the forehead and the imamah

'Urwa b. al Mughira b. Shu'ba reported it on the authority of his father that he said: The Messenger of Allah ﷺ lagged behind (in a journey) and I also lagged behind along with him. After having relieved himself he said: Have you any water with you? I brought to him a jar of water;
he washed his palms, and face, and when he tried to get his forearms out (he could not) for the sleeve of the gown was tight. He, therefore, brought them out from under the gown and, throwing it over his shoulders, he washed his forearm. He then wiped his forelock and his turban and his socks. He then mounted and I also mounted (the ride) and came to the people. They had begun the prayer with 'Abd ar-Rabmin b. 'Anf leading them and had completed a rak'a. When he perceived the presence of the Apostle of Allah ﷺ he began to retire. He (the Holy Prophet) signed to him to continue and offered prayer along with them. Then when he had pronounced the salutation, the Apostle ﷺ got up and I also got up with him, and we offered the rak'a which had been finished before we came.

وَحَدَّثَنِي مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ بَزِيعٍ، حَدَّثَنَا يَزِيدُ، - يَعْنِي ابْنَ زُرَيْعٍ - حَدَّثَنَا حُمَيْدٌ الطَّوِيلُ، حَدَّثَنَا بَكْرُ بْنُ عَبْدِ اللَّهِ الْمُزَنِيُّ، عَنْ عُرْوَةَ بْنِ الْمُغِيرَةِ بْنِ شُعْبَةَ، عَنْ أَبِيهِ، قَالَ تَخَلَّفَ رَسُولُ اللَّهِ ﷺ وَتَخَلَّفْتُ مَعَهُ فَلَمَّا قَضَى حَاجَتَهُ قَالَ " أَمَعَكَ مَاءٌ " . فَأَتَيْتُهُ بِمَطْهَرَةٍ فَغَسَلَ كَفَّيْهِ وَوَجْهَهُ ثُمَّ ذَهَبَ يَحْسِرُ عَنْ ذِرَاعَيْهِ فَضَاقَ كُمُّ الْجُبَّةِ فَأَخْرَجَ يَدَهُ مِنْ تَحْتِ الْجُبَّةِ وَأَلْقَى الْجُبَّةَ عَلَى مَنْكِبَيْهِ وَغَسَلَ ذِرَاعَيْهِ وَمَسَحَ بِنَاصِيَتِهِ وَعَلَى الْعِمَامَةِ وَعَلَى خُفَّيْهِ ثُمَّ رَكِبَ وَرَكِبْتُ فَانْتَهَيْنَا إِلَى الْقَوْمِ وَقَدْ قَامُوا فِي الصَّلاَةِ يُصَلِّي بِهِمْ عَبْدُ الرَّحْمَنِ بْنُ عَوْفٍ وَقَدْ رَكَعَ بِهِمْ رَكْعَةً فَلَمَّا أَحَسَّ بِالنَّبِيِّ ﷺ ذَهَبَ يَتَأَخَّرُ فَأَوْمَأَ إِلَيْهِ فَصَلَّى بِهِمْ فَلَمَّا سَلَّمَ قَامَ النَّبِيُّ ﷺ وَقُمْتُ فَرَكَعْنَا الرَّكْعَةَ الَّتِي سَبَقَتْنَا .

Ibn Mughira narrated it from his father: The Apostle of Allah ﷺ wiped over his socks and over his forehead and over his turban.

حَدَّثَنَا أُمَيَّةُ بْنُ بِسْطَامَ، وَمُحَمَّدُ بْنُ عَبْدِ الأَعْلَى، قَالاَ حَدَّثَنَا الْمُعْتَمِرُ، عَنْ أَبِيهِ، قَالَ حَدَّثَنِي بَكْرُ بْنُ عَبْدِ اللَّهِ، عَنِ ابْنِ الْمُغِيرَةِ، عَنْ أَبِيهِ، أَنَّ النَّبِيَّ ﷺ مَسَحَ عَلَى الْخُفَّيْنِ وَمُقَدَّمِ رَأْسِهِ وَعَلَى عِمَامَتِهِ .

This hadith has been transmitted by Ibn Mughira on the authority of his father by another chain of transmitters.

وَحَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى، حَدَّثَنَا الْمُعْتَمِرُ، عَنْ أَبِيهِ، عَنْ بَكْرٍ، عَنِ الْحَسَنِ، عَنِ ابْنِ الْمُغِيرَةِ، عَنْ أَبِيهِ، عَنِ النَّبِيِّ ﷺ بِمِثْلِهِ .

Bakr reported that he had heard from the son of Mughira that verily the Apostle of Allah ﷺ performed ablution and wiped over his forehead and wiped over his turban and over his socks.

وَحَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، وَمُحَمَّدُ بْنُ حَاتِمٍ، جَمِيعًا عَنْ يَحْيَى الْقَطَّانِ، قَالَ ابْنُ حَاتِمٍ حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ، عَنِ التَّيْمِيِّ، عَنْ بَكْرِ بْنِ عَبْدِ اللَّهِ، عَنِ الْحَسَنِ، عَنِ ابْنِ الْمُغِيرَةِ بْنِ شُعْبَةَ، عَنْ أَبِيهِ، قَالَ بَكْرٌ وَقَدْ سَمِعْتُ مِنِ ابْنِ الْمُغِيرَةِ، أَنَّ النَّبِيَّ ﷺ تَوَضَّأَ فَمَسَحَ بِنَاصِيَتِهِ وَعَلَى الْعِمَامَةِ وَعَلَى الْخُفَّيْنِ .