Muhammad bin Umar (al-Waqidi) states that the lineage of Asma' bin Harithah bin Sa'id bin Abdullah bin Ghiyath goes back to Banu Harithah bin Malik bin Afsa.

Sayyiduna Asma' bin Harithah al-Aslami (may Allah be pleased with him) states: I came to the Prophet (peace and blessings be upon him) on the day of Ashura, and he (peace and blessings be upon him) asked: "O Asma'! Have you fasted today?" I said: No. He (peace and blessings be upon him) said: "Then fast." I said: O Messenger of Allah! I have already eaten my midday meal. He (peace and blessings be upon him) said: "Fast for what remains of the day, and order your people to fast as well." Asma' (may Allah be pleased with him) says: I took my sandals in my hand and set off quickly until I reached my people, and I said: The Prophet of Allah (peace and blessings be upon him) orders you to fast. They said: We have already eaten. I said: He (peace and blessings be upon him) has ordered you to fast for the rest of your day.

Ibrahim bin al-Mundhir al-Hizami states that Sayyiduna Asma' bin Harithah (may Allah be pleased with him) died in the year 66 AH, at the age of 80.