He was asked about performing ablution after eating food touched by fire. He replied, "No. In the time of the Prophet ﷺ, we rarely came across such food, and when we did, we had no napkins except our palms, forearms, and feet. We would then pray without performing ablution."
أنه سأله عن الوضوء مما مست النار؟ فقال: لا، قد كنا زمان النبي ﷺ لا نجد مثل ذلك من الطعام إلا قليلا، فإذا نحن وجدناه لم يكن لنا مناديل إلا أكفنا وسواعدنا وأقدامنا، ثم نصلي ولا نتوضأ.
Bukhari related it in the Book of Foods (5457) from Ibrahim bin Munzir, who said, Muhammad bin Fulayh narrated to me, my father narrated to me, from Saeed bin Harith, from Jabir bin Abdullah, and he related it.Regarding his statement, "We had no napkins," Ibn Hajar said, "Its implication indicates that if they had had napkins, they would have wiped with them. So the hadith of prohibition (meaning his statement, 'He should not wipe his hand with a napkin until he has licked his fingers,' as in the preceding hadith of Jabir found in Muslim) should be understood to apply to one who has a napkin available, though this is not an absolute implication. Rather, the ruling is the same even if he wipes with something other than a napkin." Fath al-Bari (9/577).