Musannaf Ibn Abi Shaybah

Hazrat Mahmood bin Labeed says that the Prophet (peace and blessings be upon him) came to the mosque of Banu Abdul Ashhal and led them in the Maghrib prayer. When he finished the prayer with salam, he said: "Offer these two rak‘ahs in your homes." The narrator, Umar bin Qatadah, says that Hazrat Mahmood bin Labeed was the imam of his people; after leading the Maghrib prayer, he would sit in the courtyard of the mosque, and before the time for ‘Isha entered, he would go home and offer the two Sunnah rak‘ahs of Maghrib there.