فَبِأَيِّ آلَاءِ رَبِّكُمَا تُكَذِّبَانِ

This verse appears 31 times throughout Surah Al-Rahman, serving as a recurring reminder of Allah's countless blessings. It addresses both humans and jinn, challenging them to acknowledge the obvious signs of Allah's mercy and favor in their lives. The rhetorical question format emphasizes that Allah's blessings are so evident and numerous that denying them would be unreasonable. Each repetition comes after mentioning specific favors of Allah, from the creation of humans and the teaching of the Quran to the provision of food, the beauty of nature, and the promise of Paradise. This verse encourages gratitude and recognition of Allah's continuous generosity while warning against ingratitude and denial.