Sayyiduna Ibn Umar (may Allah be pleased with them both) narrates that Ghaylan bin Salamah had ten wives in the pre-Islamic era of ignorance (Jahiliyyah); then he and all of them accepted Islam, so the Messenger of Allah (peace and blessings be upon him) said to him: "Choose four of them."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 13164