Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) said that the Prophet (peace and blessings be upon him) launched a surprise raid on Banu al-Mustaliq, falling upon them among their livestock at a place called al-Muraysi'; he killed the fighting men and took the children captive.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 18095