Sayyiduna Jabir (may Allah be pleased with him) said: A woman named Umm Marwan apostatised, so the Prophet (peace and blessings be upon him) said: "Present Islam to her; if she accepts, well and good, otherwise kill her."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المرتد / 16866