(11) باب مَا كَانَ النَّبِيُّ صلى الله عليه وسلم يَتَخَوَّلُهُمْ بِالْمَوْعِظَةِ وَالْعِلْمِ كَىْ لاَ يَنْفِرُوا
Narrated Anas bin Malik:
The Prophet (ﷺ) said, "Facilitate things to people (concerning religious matters), and do not make it hard for them and give them good tidings and do not make them run away (from Islam).
Reference: Sahih al-Bukhari 69
In-book reference: Book 3, Hadith 11
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 3, Hadith 69