بُلُوغُ الْمَرَامِ
Bulugh al-Maram 1049
Marriage
وَعَنْ عُمَرَ بْنِ أَبِي سَلَمَةَ - رضى الله عنه - قَالَ : قَالَ اَلنَّبِيُّ - صلى الله عليه وسلم -{ يَا غُلَامُ ! سَمِّ اَللَّهَ , وَكُلْ بِيَمِينِكَ , وَكُلْ مِمَّا يَلِيكَ } مُتَّفَقٌ عَلَيْهِ [1] .
Narrated 'Umar bin Abu Salamah (RA): Allah's Messenger (ﷺ) said to me, "Dear child, mention Allah's Name, eat with your right hand, and eat from what is next to you." [Agreed upon].
Sunnah.com reference: Book 8, Hadith 98