O Allaah, I ask of You for Paradise and that which brings me closer to it ..

اللَّهُمَّ إِنِّي أَسْأَلُكَ الْجَنَّةَ، وَمَا قَرَّبَ إِلَيْهَا مِنْ قَوْلٍ أَوْ عَمَلٍ، وَأَعُوذُ بِكَ مِنَ النَّارِ وَمَا قَرَّبَ إِلَيْهَا مِنْ قَوْلٍ أَوْ عَمَلٍ

‘Allaahumma innee as-aluka al – Jannah, wa maa qarraba ilayhaa min qawl aw ‘amal, wa Audhubika min an-Naar wa maa qarraba ilayhaa min qawl aw ‘amal.

O Allaah, I ask of You for Paradise and that which brings me closer to it of statements or actions. And I seek refuge with You from the Hellfire and that which takes me closer to it of statements or actions.

Authenticated by Albaani in Saheeh Ibn Majah 2/327

Taken from the Fatawaa of our Shaykh, Allaama,
The Mufti of the Kingdom of Saudi Arabia, Abdul Azeez bin Abdullaah Bin Baz

Translated by Abbas Abu Yahya
https://followingthesunnah.wordpress.com/2015/06/30/the-best-dua-supplication