The last verse revealed to the Prophet ﷺ was the verse on usury.
آخر آية نزلت على النبي ﷺ آية الربا.
Bukhari narrated it in tafsir (4544) from Qabisa bin Uqba, who said, Sufyan narrated to us, from Asim, from Shaybi, from Ibn Abbas, and he mentioned it.