وَعَنْهُ أَيْضًا قَالَ: أَمَرَنَا نَبِيُّنَا صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنْ نَقْرَأَ بِفَاتِحَةِ الْكِتَابِ وَمَا تَيَسَّرَ
It is also narrated from Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him), he says: Our Prophet (peace and blessings be upon him) commanded us to recite Surah Al-Fatihah and whatever else is easy.