How can someone who performs acts of worship, such as voluntary prayers, and seeks God's forgiveness, have their good deeds annulled, while at the same time houses are being built for them in Paradise? And how does this situation align with the noble verse: "Indeed, good deeds do away with evil deeds," especially if this person commits forbidden acts in solitude?

Religious texts are complementary, not contradictory. The hadith of Thawban refers to those who commit forbidden acts secretly after feigning righteousness, making Allah the least significant in their sight. This is one of the characteristics of hypocrites mentioned in the verse: "They hide themselves from people, but they cannot hide from Allah, and He is with them when they plot by night what is displeasing to Him. And Allah is encompassing of what they do" (An-Nisa 4:108). As for those who strive against their souls and sometimes weaken, committing some sins without publicizing them or persisting in them, they are not included in this warning. Rather, they are among those whom divine grace encompasses, for Allah wrongs not people at all, nor does He invalidate the good deeds of the sincere, as stated in His verses: "Indeed, Allah does not wrong the people at all, but it is the people who wrong themselves" (Yunus 10:44), and "Whoever comes with a good deed will have ten times its like; and whoever comes with an evil deed will not be recompensed except with its like, and they will not be wronged" (Al-An'am 6:160).