תלמוד על סוכה 5:1

Rebbi Ḥananiah asked before Rebbi Mana, should they not insitute trumpet blowing? If you say so, it would turn out that [they would say, maybe] they blow for the daily sacrifice¹⁵³As required by Num. 10:10.[, and they would be led astray]. He retorted, but did we not state: “Three to separate people from work, and three to separate between weekday and holiness”¹⁵⁴Mishnah Sukkah 5:5. Every Friday afternoon after the daily sacrifice trumpets were blown to announce the coming of the Sabbath.? He answered him, there every single Friday they are blowing, one will not err. But here it is once in a long time; if you say so, it would turn out that they would say, maybe they blow for the daily sacrifice, and they would be led astray.

MISHNAH: If one drops walls down from top to bottom, if they remain higher than three hand-breadths it is disqualified¹⁸⁹But walls starting less than 3 hand-breadths from the ground are equivalent to walls standing on the ground.. From bottom to top¹⁹⁰Standing on the ground, even if the roofing is less than 10 hand-breadths from the ground., if it reaches ten hand-breadths it is qualified. Rebbi Yose said, just as from bottom to top ten hand-breadths so from top to bottom ten hand-breadths¹⁹¹For him a wall 10 hand-breadths high always is qualified, irrespective of vertical distances from ground or roof.. If the roofing is three hand-breadths distant from the walls it is disqualified¹⁹²The sukkah is disqualified if along any wall the roofing is not within 3 horizontal hand-breadths..