It is narrated from Sayyidah Umm al-Fadl (may Allah be pleased with her) that the Prophet (peace and blessings be upon him) was in my house when a Bedouin came to him and said: I had a wife, then I married a second one, and my first wife claims that she suckled my new wife (with her own milk) once or twice, or one suck or two sucks. He (peace and blessings be upon him) said: "One suck or two sucks," or he said: "one or two sucklings, do not establish the prohibition."
Muslim recorded it.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الرضاع / 15627