Reference for Beitzah 4:7
אֵין מוֹצִיאִין אֶת הָאוּר לֹא מִן הָעֵצִים, וְלֹא מִן הָאֲבָנִים, וְלֹא מִן הֶעָפָר, וְלֹא מִן הַמַּיִם, וְאֵין מְלַבְּנִין אֶת הָרְעָפִים לִצְלוֹת בָּהֶן. וְעוֹד אָמַר רַבִּי אֱלִיעֶזֶר, עוֹמֵד אָדָם עַל הַמֻּקְצֶה עֶרֶב שַׁבָּת בַּשְּׁבִיעִית, וְאוֹמֵר, מִכָּאן אֲנִי אוֹכֵל לְמָחָר. וַחֲכָמִים אוֹמְרִים, עַד שֶׁיִּרְשֹׁם וְיֹאמַר, מִכָּאן וְעַד כָּאן:
One may not extract fire (on yom tov) [this being "molid" ("creating"), which is similar to working, the fire being created on yom tov], neither from wood (i.e., by rubbing two pieces of wood together), nor from stones, nor from earth [There is a certain type of earth which emits sparks when dug from its source], nor from water. [Water is put into a vessel of white glass and placed in the sun when it is very hot. The glass becomes red hot, flax is brought and touched to the glass, and it burns.] And re'afim [hollowed earthen tiles used for covering roofs] may not be heated [in fire] for roasting (food) in them. [This, only with new tiles, for he "fashions" them by this heating, the fire glazing and hardening them.] R. Eliezer said further [Because he ruled leniently in respect to muktzeh (4:6) and does so again, "further" is stated]: A man stands over the muktzeh (the place where fruit is spread for drying), the fruit requiring hazmanah (prior designation for use on Shabbath) and hazmanah availing it] on Sabbath eve in the sabbatical year, [when the tithe does not obtain and the figs lack only hazmanah. The same applies to what is tithed, on the other (non-shemitah) years, but the tanna speaks of the ordinary instance, muktzeh, ordinarily, not having been tithed. For dried figs and raisins are generally "muktzeh," and they are not tithed until completely processed], and he says: "From here I shall take for tomorrow," [this sufficing, breirah (retroactive designation) obtaining.] The sages say: (This does not avail) until he indicates [by sign] "from here and from here," [breirah not obtaining. The halachah is in accordance with the sages.]