Al-Nazzal bin Sabrah narrates from Sayyiduna Ali (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Divorce is only after marriage; there is no freeing (of a slave) before ownership; there is no fosterage after weaning; there is no wisal in fasting, that is, keeping voluntary fasts continuously without a break; and there is no keeping silent for a whole day until night."
Abd al-Razzaq said: Sufyan said to Ma'mar: Juwaybir narrated this hadith to us and did not make it marfu'. Ma'mar said: He narrated it to us many times and made it marfu'.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الرضاع / 15658