It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that a man asked the Prophet (peace and blessings be upon him) about how many witnesses are sufficient to establish proof of breastfeeding. The Prophet (peace and blessings be upon him) said: "One man and one woman."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 5877
Hadith Gradingحکم دارالسلام:إسناده ضعيف جدا، محمد بن عثيم مجمع على ضعفه.