Deuteronomy 26:14

לא אכלתי באני ממנו I HAVE NOT EATEN THEREOF IN MY MOURNING — From here we may derive that it (partaking of sacred gifts) is forbidden to an אונן (a technical term for the near relatives of a deceased, from the period of death to burial) (cf. Sifrei Devarim 303:15; Mishnah Bikkurim 2:2). ולא בערתי ממנו בטמא NEITHER HAVE I CONSUMED ANY THEREOF UNCLEAN — i.e. whether I was unclean and it (the sacred gift) was clean, or I was clean and it unclean (Sifrei Devarim 303:16). But where has one been prohibited about this (that he declares that he has not infringed the command)? In the following passage: (Deuteronomy 12:17) “Thou mayest not eat within thy gates [the tithe of thy corn]” — this (the expression “within thy gates”) refers to eating sacred things in a state of uncleanness, just as is stated with reference to פסולי המקדשין (animals intended as sacrifices, but which have become unfit for that purpose) (Deuteronomy 15:22) “Thou mayest eat it within thy gates: the unclean and the clean person [may eat it alike]”. These you may eat, states Scripture, — but this (the tithes of thy corn in a state of uncleanness) you must not eat in the manner which is termed “eating within thy gates” (“the unclean and the clean together”) of which there is mention in another passage (Yevamot 73b). ולא נתתי ממנו למת NOR HAVE I GIVEN THEREOF FOR THE CORPSE to prepare for it a coffin and shrouds (Mishnah Maaser Sheni 5:12). שמעתי בקול ה' אלהי I HAVE HEARKENED TO THE VOICE OF THE LORD MY GOD — i.e. I have brought it into the Chosen House (Temple‎) (Mishnah Maaser Sheni 5:12). עשיתי ככל אשר צויתני I HAVE DONE ACCORDING TO ALL THOU HAST COMMANDED ME — I have myself rejoiced and made others rejoice by it (Sifrei Devarim 303:19; Mishnah Maaser Sheni 5:12).

לֹא־אָכַ֨לְתִּי בְאֹנִ֜י מִמֶּ֗נּוּ וְלֹא־בִעַ֤רְתִּי מִמֶּ֙נּוּ֙ בְּטָמֵ֔א וְלֹא־נָתַ֥תִּי מִמֶּ֖נּוּ לְמֵ֑ת שָׁמַ֗עְתִּי בְּקוֹל֙ יְהֹוָ֣ה אֱלֹהָ֔י עָשִׂ֕יתִי כְּכֹ֖ל אֲשֶׁ֥ר צִוִּיתָֽנִי׃

I have not eaten of it in my mourning, neither have I consumed any part of it when unclean, nor given of it for the dead: but I have hearkened to the voice of the Lord my God, and have done according to all that thou hast commanded me.