One who uses ambiguous words in his oath

It was narrated that Suwaid bin Hanzalah said:
"We went out looking for the Messenger of Allah ﷺ and Wa'il bin Hujr was with us. An enemy of his seized him and the people were reluctant to swear an oath but I swore that he was my brother, so they set him free. We came to the Messenger of Allah ﷺ and I told him that the people had been reluctant to swear an oath, but I had sworn that he was my brother. He said: 'You told the truth. The Muslim is the brother of his fellow Muslim.' "

حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ مُوسَى، عَنْ إِسْرَائِيلَ، ح وَحَدَّثَنَا يَحْيَى بْنُ حَكِيمٍ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ مَهْدِيٍّ، عَنْ إِسْرَائِيلَ، عَنْ إِبْرَاهِيمَ بْنِ عَبْدِ الأَعْلَى، عَنْ جَدَّتِهِ، عَنْ أَبِيهَا، سُوَيْدِ بْنِ حَنْظَلَةَ قَالَ خَرَجْنَا نُرِيدُ رَسُولَ اللَّهِ ﷺ وَمَعَنَا وَائِلُ بْنُ حُجْرٍ فَأَخَذَهُ عَدُوٌّ لَهُ فَتَحَرَّجَ النَّاسُ أَنْ يَحْلِفُوا فَحَلَفْتُ أَنَا أَنَّهُ أَخِي فَخَلَّى سَبِيلَهُ فَأَتَيْنَا رَسُولَ اللَّهِ ﷺ فَأَخْبَرْتُهُ أَنَّ الْقَوْمَ تَحَرَّجُوا أَنْ يَحْلِفُوا وَحَلَفْتُ أَنَا أَنَّهُ أَخِي فَقَالَ " صَدَقْتَ الْمُسْلِمُ أَخُو الْمُسْلِمِ " .

It was narrated from Abu Hurairah that the Messenger of Allah ﷺ said:
"The oath is only according to the intention of the one who requests the oath to be taken."'

حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا يَزِيدُ بْنُ هَارُونَ، أَنْبَأَنَا هُشَيْمٌ، عَنْ عَبَّادِ بْنِ أَبِي صَالِحٍ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ ﷺ " إِنَّمَا الْيَمِينُ عَلَى نِيَّةِ الْمُسْتَحْلِفِ " .