The Messenger of Allāh (ﷺ) said: 'The luckiest person who will | Dār At-Tawhīd

The Messenger of Allāh (ﷺ) said: "The luckiest person who will have my intercession on the Day of Resurrection will be the one who said sincerely from the bottom of his heart "Lā ilāha illa Allāh."

قال رسول ﷲ ﷺ: «أسعد الناس بشفاعتي يوم القيامة من قال: لا إله إلا الله خالصًا من قلبه» صحيح البخاري (٩٩)

Sahih Al-Bukhārī