Deeds earn different levels of rewards based on the faith and sincerity in one’s heart. Two people might be praying in the same row, yet the difference between their prayers is like the distance between the earth and the heavens. Allah said, "Neither their meat nor their blood will reach Allah, but what reaches Him is taqwa from you." (Q22:37)

— Ibn Taymiyyah, Minhāj al-sunnah, vi. 222, trans. Tulayhah