‘Umm al-Mu’minin Aisha (may Allah be pleased with her) says that the Prophet (peace and blessings of Allah be upon him) came to her happily, the lines of his face were shining, and he (peace be upon him) said:“Did you not see, just now Mujazziz saw Zaid bin Harithah and Usamah bin Zaid and said: These feet (i.e., their relationship) are from one another 1.” Imam Tirmidhi says:
1- This hadith is Hasan Sahih,
2- Ibn ‘Uyaynah narrated this hadith with the chain of «عن الزهري عن عروة عن عائشة» . And in it, there is this addition: He (the Prophet) said:“Did you not see that Mujazziz passed by Zaid bin Harithah and Usamah bin Zaid (may Allah be pleased with them), at that time both of them had covered their heads and their feet were uncovered, so he said: These feet (their relationship) are from one another,
3- Similarly, Sa’id bin Abdur Rahman and several people narrated this hadith to us with the chain of «عن سفيان بن عيينة هذا الحديث عن الزهري عن عروة عن عائشة» , this hadith is Hasan Sahih,
4- Some people of knowledge have deduced from this hadith the validity of qiyafah (the science of tracing lineage by physical resemblance).