Will those foremost in good deeds enter Paradise without reckoning, and will they be the highest in rank among the people of Paradise, and does sincere repentance and complete adherence to Sharia throughout one's life guarantee entry into Paradise without reckoning?

Those who are foremost in good deeds hold the highest status among people and will enter Paradise without reckoning. This is based on the hadith of Abu Darda (may Allah be pleased with him) in his interpretation of the verse: (Then We made inheritors of the Book those We chose of Our servants; and among them is he who wrongs himself, and among them is he who is moderate, and among them is he who is foremost in good deeds by permission of Allah. That [foremost] is the great bounty). And also based on the saying of the Prophet (peace be upon him): "My Ummah is three thirds: one-third will enter Paradise without reckoning or punishment, one-third will be judged with a light reckoning and then enter Paradise, and one-third will be purified [through trials]."

Whoever repents with a general repentance, adheres to obligations and supererogatory acts, abandons forbidden things, disliked things, doubtful things, and unnecessary permissible things, and maintains this throughout their life until death, is undoubtedly among the foremost, and among the best and highest in status.