Nedarim

 … AS THE LAMB, AS THE TEMPLE SHEDS etc. It was taught: A lamb, for a lamb, as a lamb; [or] sheds, for sheds, as sheds; [or] wood, for wood, as wood; [or] fire, for fire, as fire; [or] the altar, for the altar, as the altar; [or] the temple, for the temple, as the temple; or Jerusalem, for Jerusalem, as Jerusalem, — in all these cases, [if he says,] 'what I might eat of yours,' he is forbidden; 'what I might not eat of yours,' he is permitted. Now which Tanna do we know draws no distinction between a lamb, for a lamb and as a lamb? — R. Meir.  Then consider the second clause: and in all these cases, [if he says], 'that which I might not eat of yours [be so],' he is permitted. But we learnt: [If one says to his neighbour,] 'That which I might not eat of yours be not for korban, R. Meir forbids [him]. Now R. Abba commented thereon: It is as though he said, 'Let it [i.e., your food] be for korban, therefore I may not eat of yours'? — This is no difficulty: in the one case he said, 'lo le-imra';  in the other he said, 'le-imra'.  MISHNAH. IF ONE SAYS [TO HIS NEIGHBOUR], 'THAT WHICH I MIGHT EAT OF YOURS BE KORBAN', [OR]' A BURNT-OFFERING',  [OR] 'A MEAL-OFFERING', [OR]' A SIN-OFFERING [OR] 'A THANKSGIVING-OFFERING', [OR]' A PEACE-OFFERING, — HE IS FORBIDDEN.  R. JUDAH PERMITTED [HIM].  [IF HE SAYS,] 'THE KORBAN,' [OR] 'AS A KORBAN,' [OR]' KORBAN,  BE THAT WHICH I MIGHT EAT OF YOURS,' HE IS FORBIDDEN.  IF HE SAYS: THAT WHICH I MIGHT NOT EAT OF YOURS BE FOR A KORBAN,'  R. MEIR FORBIDS [HIM]. GEMARA. Now, the Mishnah teaches, [IF HE SAYS.] 'THE KORBAN,' [OR] 'AS KORBAN,' [OR] 'A KORBAN BE THAT WHICH I MIGHT EAT OF YOURS,' HE IS FORBIDDEN. Thus, it is anonymously taught as R. Meir, who recognises no distinction between 'it sheep' and 'for a sheep'.  But if so, then as to what he [the Tanna] teaches: 'THE KORBAN … [BE] THAT WHICH I MIGHT EAT OF YOURS,' HE IS FORBIDDEN. But it was taught: The Sages concede to R. Judah that if one says, 'Oh, korban,' or 'Oh, burnt-offering,' 'Oh, meal-offering,' 'Oh, sin-offering, what I will eat this of thine,' he is permitted, because he merely vowed by the life of the korban!  —