The Messenger of Allah ﷺ said, "The womb is a branch attached to the Most Merciful. Whoever maintains it, Allah maintains ties with him, and whoever severs it, Allah severs ties with him. On the Day of Resurrection it will have a fluent, eloquent tongue."
قال رسول الله ﷺ: الرحم شجنة من الرحمن، من يصلها يصله، ومن يقطعها يقطعه، لها لسان طلق ذلق يوم القيامة.
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Bukhari narrated it in Adab al-Mufrad (54), from Musa bin Ismail, who said, Abu Awana told us, from Uthman bin Mughira, from Abu Anbas, who said, I went in to see Abdullah bin Amr at Waht, meaning a piece of land he owned in Taif, and he said, The Prophet ﷺ ﷺ bent his finger for us, then he mentioned the hadith. Its chain is hasan because of Abu Anbas, who is Thaqafi, whose name is Muhammad bin Abdullah bin Qarib. A group of narrators reported from him, and Ibn Hibban mentioned him among the trustworthy narrators.It has a chain that strengthens it, which is what Ahmad narrated (6774) from Bahz and Affan, who both said, Hammad bin Salama told us, Qatada informed us, from Abu Thumama Thaqafi, from Abdullah bin Amr bin As, who said, the Messenger of Allah ﷺ said, "The bond of kinship will be placed on the Day of Resurrection, having a hook like the hook of a spindle. It speaks with a fluent and eloquent tongue, joining whoever joins it and cutting off whoever cuts it off." Affan said "the spindle," and said, "with tongues of its own."Abu Thumama had no one narrate from him except Qatada, and no one deemed him trustworthy except Ibn Hibban. He is among the men mentioned in Taajeel. It has also been narrated as a stopped report, and all of this strengthens it.His statement, "the hook of the spindle" means its hook, which is the bent part at its top, and the hook is anything with a bent head. His statement, "fluent" means quick of speech. His statement, "eloquent" means clear and expressive.