We went out with Messenger of Allah ﷺ to Khaibar, and when we were at As-Sahba', (Yahya, a sub-narrator said, "As-Sahba' is a place at a distance of one day's journey to Khaibar)." Messenger of Allah ﷺ asked the people to bring their food, but there was nothing with the people except Sawiq. So we all chewed and ate of it. Then the Prophet ﷺ asked for some water and he rinsed his mouth, and we too, rinsed our mouths. Then he led us in the Maghrib prayer without performing ablution (again).  

خَرَجْنَا مَعَ رَسُولِ اللَّهِ ﷺ إِلَى خَيْبَرَ فَلَمَّا كُنَّا بِالصَّهْبَاءِ قَالَ يَحْيَى وَهْىَ مِنْ خَيْبَرَ عَلَى رَوْحَةٍ دَعَا رَسُولُ اللَّهِ ﷺ بِطَعَامٍ فَمَا أُتِيَ إِلاَّ بِسَوِيقٍ فَلُكْنَاهُ فَأَكَلْنَا مِنْهُ ثُمَّ دَعَا بِمَاءٍ فَمَضْمَضَ وَمَضْمَضْنَا فَصَلَّى بِنَا الْمَغْرِبَ وَلَمْ يَتَوَضَّأْ قَالَ سُفْيَانُ سَمِعْتُهُ مِنْهُ عَوْدًا وَبَدْءًا