I heard Ibn Abbas say: I was one of those whom the Prophet sent ahead amongh the weak ones of his family.
Sunan an-Nasa'i Book 24, Hadith 415
← Previous Hadith "I asked usamah bin Zaid, who rode behind the Messenger of Allah one the evening of Arafat. I said: "What did you do?' He said: 'We started traveling until we reached Al-Muzadalifah, then he stopped and prayed Maghrib. Then he sent word to the people to stay in their camps, and they did not unload their camels until the Messenger of Allah had prayed the later Isah. Then the people unloaded their camels and made camp. When morning came I set out on foot amonth those of the Quraish who got there first, and Al-Fadl rode behind the Prophet.'"

Sunan an-Nasa'i Book 24, Hadith 414 Next Hadith → "I was one those whom the Prophet sent ahead on the night of Al-Muzdalifah among the weak ones of his family."

Sunan an-Nasa'i Book 24, Hadith 416