Sahih al-Bukhari 7505

Arabic

حَدَّثَنَا أَبُو الْيَمَانِ، أَخْبَرَنَا شُعَيْبٌ، حَدَّثَنَا أَبُو الزِّنَادِ، عَنِ الأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏ "‏ قَالَ اللَّهُ أَنَا عِنْدَ ظَنِّ عَبْدِي بِي ‏"‏‏.‏

English translation

Narrated Abu Huraira:Allah's Messenger (ﷺ) said, "Allah said, 'I am to my slave as he thinks of Me, (i.e. I am able to do for him what he thinks I can do for him). (See Hadith No)

Reference: Sahih al-Bukhari 7505, Book of Oneness, Uniqueness of Allah (Tawheed). English translation by Dr. Muhammad Muhsin Khan.