Sayyiduna Suwaid bin Nu’man (may Allah be pleased with him) narrates: We were coming along with the Prophet Muhammad (peace and blessings be upon him) until we reached a place called Rauha’ near Khaybar. The Prophet (peace and blessings be upon him) asked for food, and only sattu (roasted barley flour) was available. The narrator says: We ate it. The Prophet (peace and blessings be upon him) then asked for water, rinsed his mouth, and performed the prayer. He did not perform ablution (wudu) again.
Hadith Referenceصحیح ابن حبان / كتاب الطهارة / 1152
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - يأتي قريبا أتَّم منه (1152). تنبيه!! رقم (1152) = (1155) من «طبعة المؤسسة». - مدخل بيانات الشاملة -.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط مسلم