(6) باب الْعَمَلِ الَّذِي يُبْتَغَى بِهِ وَجْهُ اللَّهِ
Narrated `Utban bin Malik Al-Ansari:
who was one of the men of the tribe of Bani Salim: Allah's Messenger (ﷺ) came to me and said, "If anybody comes on the Day of Resurrection who has said: La ilaha illal-lah, sincerely, with the intention to win Allah's Pleasure, Allah will make the Hell-Fire forbidden for him."
Reference: Sahih al-Bukhari 6423
In-book reference: Book 81, Hadith 12
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 8, Book 76, Hadith 431