Rif Shabbat 9a

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9a

{Shabbat 21a}
one must not light with it.
In terms of what were these words stated?
To light.
But to encompass it is permitted.

By way of explanation: "to encompass" - to thicken the head of the wick so as to increase the light.

Rav Brona cited Rav: The melted tallow and the dissolved inwards of fish, one may pour a little oil and light with it.

{Shabbat 21b}

THE LAWS OF CHANUKKA:
Rabbi Zera (cited Rav Matna who) cited Rav: Regarding the wicks and oils which the Sages said, One must not light therewith on the Sabbath, one may light therewith on Hanukkah, either on weekdays or on the Sabbath.

From the fact that we state that one may light with them on Chanukka {even} on Shabbat, we may deduce from this that it is forbidden to make use of its {the Chanukka lamp's} light. For since it is forbidden to make use of its light, he will not come to tilt.

And further, from the fact that one may light with them on Chanukka {even} on Shabbat, it is so that if they are extinguished, he need not pay it attention, and so we deduce that if it goes out, it does not require attention.

And this that we learnt {in a brayta} "Its observance {mitzvah} is from sunset until there is no wayfarer in the market" does not mean that if it is extinguished he must {re-}light it, but rather that if he did not light it until now, he should light. Alternatively, for its measure (that is to say, that he needs to put into it sufficient oil such that it would continue burning for this length of time).

If it had been burning continuously for this length of time, and he wishes to extinguish it, or to make use of its light, he permission is in his hand.

"Until there is no wayfarer {lit. foot = footsteps} in the market":
Until when {is this}?
Rabbi Yochanan said: Until the footsteps of the Tarmodeans cease.
To explain: There was a known type of wood by them, and they called it tarmoda, and the people who brought them were called Tarmodeans, and they waited until after sunset