Silsilah as-Sahihah 649 — Performing two Sunnah before Maghrib

It is narrated from Sayyiduna Abdullah Muzani that the Messenger of Allah (peace and blessings of Allah be upon him) offered two rak‘ahs before Maghrib and said: "Offer two rak‘ahs before Maghrib, (offer two rak‘ahs before Maghrib)." Then, the third time he said: "Whoever wishes may offer them." The Prophet (peace and blessings of Allah be upon him) feared that people might consider it a (mandatory) Sunnah or a fixed practice.