Salim narrates from his father (may Allah be pleased with them both) that when Sayyiduna Ghaylan bin Salamah (may Allah be pleased with him) accepted Islam, he had ten wives. The Prophet (peace and blessings be upon him) said: "Choose four and leave the rest."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 14041