כִּי־יֶ֣לֶד יֻלַּד־לָ֗נוּ בֵּ֚ן נִתַּן־לָ֔נוּ וַתְּהִ֥י הַמִּשְׂרָ֖ה עַל־שִׁכְמ֑וֹ וַיִּקְרָ֨א שְׁמ֜וֹ פֶּ֠לֶא יוֹעֵץ֙ אֵ֣ל גִּבּ֔וֹר אֲבִיעַ֖ד שַׂר־שָׁלֽוֹם׃
For a child is born unto us, a son is given unto us; and the government is upon his shoulder; and his name is called Pele-joez-el-gibbor Abi-ad-sar-shalom;
Mishnah Yevamot
[If a woman states], “A son was given to me [while I was] in a country beyond the sea” and she also states, “my son died and afterwards my husband died”, she is believed. [If she states], “my husband died and afterwards my son died”, she is not believed, but we are concerned that her words [might be true] and she must, therefore, perform halitzah but may not contract yibbum.