The Rites of Hajj (Kitab Al-Manasik Wa'l-Hajj)
Dawud :: Book 10 : Hadith 1924
Narrated Abdullah ibn Umar:
Abdullah ibn Malik said: I offered three rak'ahs of the sunset prayer and two rak'ahs of the night prayer along with Ibn Umar. Thereupon Malik ibn al-Harith said: What is this prayer? He said: I offered these prayers along with the Apostle of Allah (peace_be_upon_him) in this place with a single iqamah.