Reference for Eruvin 186:1

גידוד חמשה ומחיצה חמשה אין מצטרפין עד שיהא או כולו בגידוד או כולו במחיצה

All embankment five handbreadths high and a partition on it five handbreadths high are not combined<span class="x" onmousemove="('comment',' To constitute a single partition of the height of ten handbreadths which is the minimum height prescribed for an enclosure round a private domain.');">¹</span> since it is necessary<span class="x" onmousemove="('comment',' Lit., 'until'.');">²</span> that the entire height<span class="x" onmousemove="('comment',' Of ten handbreadths.');">³</span>

Jastrow

Jastrow

Jastrow

Jastrow