Musannaf Ibn Abi Shaybah 3643 — What is recited in Maghrib

Sayyiduna Jabir bin Abdullah (may Allah be pleased with him) said: Sayyiduna Mu'adh (may Allah be pleased with him) led some people in the Maghrib prayer. Meanwhile a young man of the Ansar, who was doing some work on his camel, passed by and joined the congregation. Sayyiduna Mu'adh made the recitation very long, because of which the young man broke off the prayer and went off in search of his camel. When this reached the Prophet (peace and blessings be upon him), he said: "O Mu'adh! Are you one who puts people to trial (and drives them away from the religion)? Why does not one of you recite Surah al-A'la and Surah al-Shams in Maghrib?"