The Messenger of Allah ﷺ said, "A single suckle or two does not establish the prohibition of marriage."
قال رسول الله ﷺ: لا تحرم الخطفة والخطفتان.
No references are available.
Nasai narrated it (3311) from Muhammad bin Abdullah bin Bazi (with the ba vocalized as fatha and the zay vocalized as kasra), he said, Yazid, that is Ibn Zuray, narrated to us, he said, Saeed narrated to us, from Qatada, who said, We wrote to Ibrahim bin Yazid Nakhai asking him about breastfeeding. He wrote back that Shurayh had told us that Ali and Ibn Masud used to say, "Both a little and a lot of breastfeeding make it forbidden." In his letter it was also stated that Abu Shatha Muharibi told us that Ayesha told him that the Prophet of Allah ﷺ said, and he then mentioned it.Its chain of transmission is sahih.