Reference for Rosh Hashanah 16:5

מאי טעמא אי בעית אימא לאו אורח ארעא למיקם מלכא אבראי ואיבעית אימא מקמי דליפוש חרון אף:

FOR RELEASE YEARS. How do we know this [from the Scripture]? - Because it is written, And in the seventh year shall be a sabbath of solemn rest for the land,<span class="x" onmousemove="('comment',' Lev. XXV, 4.');">⁷</span> and that this commences with Tishri we learn from the analogy with the word 'year'<span class="x" onmousemove="('comment',' And he derives (the meaning of) 'year' from 'year' (commencing) with Tishri.');">⁸</span>

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