Jewish Babylonian Talmud – Tracts Rosh Hashana – Regulations concerning New Year’s Day when it falls on the Sabbath, and the prayers, the ordinances of the benedictions, etc.
p. 61 CHAPTER IV. REGULATIONS CONCERNING THE NEW YEAR'S DAY WHEN IT FALLS ON SABBATH, AND THE PRAYERS THEREON--THE ORDINANCES OF THE BENEDICTIONS, ETC. MISHNA: When the feast of New Year happened to fall on the Sabbath, they used to sound (the cornet) in the Temple, but not outside of it. After the destruction of the Temple R.