Sayyida Aisha (may Allah be pleased with her) said: "No woman's pregnancy can remain in her womb for more than two years, even if it changes as much as a spindle stick." A woman named Jameela bint Sa'd is the sister of Ubaid bin Sa'd.
Hadith Referenceسنن الدارقطني / كتاب النكاح / 3875
Hadith Takhrij«أخرجه سعيد بن منصور فى ((سننه)) برقم: 2077، والبيهقي فى((سننه الكبير)) برقم: 15651، 15652، والدارقطني فى ((سننه)) برقم: 3874، 3875»