Fortress of the Muslim (Hisn al-Muslim)
حصن المسلم
(127) Chapter: When slaughtering or offering a sacrifice
(127) ما يقول عند الذبح أو النحر
Hisn al-Muslim 246 
Bismillāh wallāhu Akbar [Allāhumma minka wa lak] Allāhumma taqabbal minnī. With the Name of Allah, Allah is the Most Great! [O Allah, from You and to You.] O Allah, accept it from me. Reference: Muslim 3/ 1557, Al-Bayhaqi 9/287.
بِسْمِ اللَّهِ وَاللَّهُ أَكْبَرُ [اللَّهُمَّ مِنْكَ وَلَكَ] اللَّهُمَّ تَقَبَّلْ مِنِّي
Reference : Hisn al-Muslim 246