It is narrated from Hazrat Asma (may Allah be pleased with her) that the Prophet (peace and blessings be upon him) said: "I do not shake hands with women."
Hadith Referenceمسند احمد / من مسند القبائل / 27594
Hadith Gradingحکم دارالسلام:صحيح لغيره، وهذا إسناد ضعيف لضعف شهر بن حوشب