Sahih al-Bukhari, Book 3, Hadith 11 (In-Book) ⓘ
Narrated Anas bin Malik: The Prophet 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).
حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، قَالَ حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا شُعْبَةُ، قَالَ حَدَّثَنِي أَبُو التَّيَّاحِ، عَنْ أَنَسٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " يَسِّرُوا وَلاَ تُعَسِّرُوا، وَبَشِّرُوا وَلاَ تُنَفِّرُوا " .
also referenced under: Hadith 69 (DarusSalam) & Volume 1, Book 3, Hadith 69 (USC-MSA)