Related for Shabbat 208:6

כתב אות אחת סמוך לכתב: מאן תנא אמר רבא בר רב הונא דלא כר' אליעזר דאי ר' אליעזר האמר אחת על האריג חייב:

— It adds what was taught by R. Hanina: If he writes it [a divorce] with the fluid of taria,<span class="x" onmousemove="('comment',' A sort of ink. Rashi: either fruit juice or rain water. V. Low. Graph. Requisiten, pp. 158, 161. v. Meg.. Sonc. ed., p. 103. ');">¹⁵</span> or gall-nut [juice], it is valid.<span class="x" onmousemove="('comment',' Hence it must be regarded as durable and therefore involves culpability in connection with the Sabbath. ');">¹⁶</span> R. Hiyya taught: If he writes it with dust,<span class="x" onmousemove="('comment',' So cur. edd. Rashi reads: with lead. ');">¹⁷</span>

Tosefta Terumot