Sahih Al Bukhari 1: Chapter 3, Hadith 68

(68) The Prophet used to take care of the people in preaching by selecting a suitable time so that they might not run away (never made them averse or bored them with religious talk and knowledge all the time)

حَدَّثَنَا مُحَمَّدُ بْنُ يُوسُفَ، ‏‏‏‏‏‏قَالَ:‏‏‏‏ أَخْبَرَنَا سُفْيَانُ، ‏‏‏‏‏‏عَنِ الْأَعْمَشِ، ‏‏‏‏‏‏عَنْ أَبِي وَائِلٍ، ‏‏‏‏‏‏عَنْ ابْنِ مَسْعُودٍ، ‏‏‏‏‏‏قَالَ:‏‏‏‏ "كَانَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَتَخَوَّلُنَا بِالْمَوْعِظَةِ فِي الْأَيَّامِ كَرَاهَةَ السَّآمَةِ عَلَيْنَا".

SAHIH HADITH:

Narrated Ibn Mas`ud: The Prophet used to take care of us in preaching by selecting a suitable time, so that we might not get bored. (He abstained from pestering us with sermons and knowledge all the time).

REFERENCE:

Sahih Al Bukhari 1: Chapter 3, Hadith 68