Narrated Jabir bin Abdullah (may Allah be pleased with him): We were offering prayer with the Prophet (peace and blessings of Allah be upon him) when a caravan (from Syria) arrived carrying grain. The people turned towards the caravan until only twelve men remained with the Prophet (peace and blessings of Allah be upon him). Then this verse was revealed: "And when they saw a transaction or a diversion, they rushed to it and left you standing (O Prophet) in the sermon." (__QUR_N__ Al-Jumu'ah: 11)

Narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings of Allah be upon him) used to offer two rak'ahs before Zuhr and two rak'ahs after Zuhr, and two rak'ahs after Maghrib in his house, and (also) two rak'ahs after Isha, and he would not offer (these) after Jumu'ah until he returned (to his house), then he would offer two rak'ahs.