Now the same year at the feast of weeks I prepared in my house a great feast, and I sat at my table to eat. Then I said to my son Tobiyyah, Go and bring one of our poor brethren to eat with us, and I and all who sit with me will not eat until thou comest.
Tobit's Feast of Shavuot in Exile at Nineveh
Book of Tobit 2:1