The ruling on one who entered Islam and died before he was able to act with his limbs

Question:
May Allah reward you. Your Eminence, father, the questioner says: You previously stated with us that Paradise is not entered unless a person works for it, and one does not say, “May Allah reward you,” that a person enters Paradise without work. So how do we reconcile that with the man who embraced Islam in battle and was killed, about whom the Prophet (peace and blessings be upon him) said that he is among the people of Paradise, even though he did not prostrate to Allah in a single prostration?

Answer:
Islam is not an act of the limbs. If a person says, “I bear witness that there is no god but Allah,” with sincerity and certainty, and “I bear witness that Muhammad is the Messenger of Allah,” with sincerity and certainty, this is an act. This is an act of the heart and an act of the tongue. He was unable to act with his limbs because he was unable to act with his limbs, but he acted with his tongue by uttering the two testimonies, and with his heart by being certain of their meaning and believing in them. What did he do?