Is the recitation of Surahs Al-A'la and Al-Ghashiyah in most Friday prayers a Sunnah of the Prophet, may Allah bless him and grant him peace?

The Prophet, peace and blessings be upon him, used to recite Surahs Al-A'la and Al-Ghashiyah in Friday prayers, and sometimes Surahs Al-Jumu'ah and Al-Munafiqun. This indicates that his recitation of the same Surahs was frequent but not constant. Whoever regularly recites Al-A'la and Al-Ghashiyah, and sometimes recites Al-Jumu'ah and Al-Munafiqun, has followed the Sunnah. It is preferable to occasionally abandon consistent recitation so that people do not mistakenly believe it to be obligatory.