(5) باب التَّيَمُّنِ فِي الأَكْلِ وَغَيْرِهِ
Narrated `Aisha:
The Prophet (ﷺ) used to love to start doing things from the right side whenever possible, in performing ablution, putting on his shoes, and combing his hair. (Al-Ash'ath said: The Prophet (ﷺ) used to do so in all his affairs.)
Reference: Sahih al-Bukhari 5380
In-book reference: Book 70, Hadith 8
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 7, Book 65, Hadith 292