Srimad Bhagavatam Canto 08, Chapter 16, Text 41

SB 8.16.41

niveditam tad-bhaktaya
 dadyad bhuñjita va svayam
dattvacamanam arcitva
 tambulam ca nivedayet
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
One should offer all the prasada to a Vaisnava or offer him some of the prasada and then take some oneself. After this, one should offer the Deity acamana and then betel nut and then again worship the Lord.
Srimad Bhagavatam Canto 08, Chapter 16, Text 40
Srimad Bhagavatam Canto 08, Chapter 16, Text 42