It is narrated from Yahya bin Abdur Rahman bin Hatib that two men claimed a child, so Umar (may Allah be pleased with him) called for those skilled in physiognomy. They said, "Both of them share in him." Then Umar (may Allah be pleased with him) said to the child, "Go to whichever of them you wish."
Hadith Referenceمسند الإمام الشافعي / كتاب القضاء والأحكام والدعاوى والبينات واليمين ومع الشاهد والأيمان والشهادات / 1696
Hadith Takhrijاسناده ضعيف لانقطاعه فان يحي بن عبد الرحمن بن حاطب لم يدرك عمر : اخرجه البيهقي: 10/ 263 - وفى المعرفة السنن والآثار له (6000)۔