Is it possible to reach the highest Paradise through means other than those mentioned in Surat Al-Mu'minun?

Al-Firdaws is a name used generally for Paradise, and it is also used for its highest and best abodes. The ways to attain Al-Firdaws Al-A'la (the Highest Firdaws) are: martyrdom in the way of Allah, and supplicating for it. The Messenger of Allah, peace and blessings be upon him, commanded us to ask Allah for Al-Firdaws because it is the middle and highest part of Paradise, above which is the Throne of the Most Merciful, and from it the rivers of Paradise gush forth. Allah may grant Al-Firdaws to someone who did not strive (in jihad) by His grace.