Deuteronomy 12:15
Notwithstanding thou mayest kill and eat flesh in all thy gates, whatsoever thy soul lusteth after, according to the blessing of the Lord thy God which he hath given thee: the unclean and the clean may eat thereof, as of the roebuck, and as of the hart.
Cross-references
Deuteronomy 12:21 expands on this allowance, specifying that distant towns may slaughter and eat as much as they desire.
Deuteronomy 12:22 explicitly repeats the comparison to gazelle and deer, clarifying that unclean and clean may eat.
Deuteronomy 12:20 expands the permission to eat meat freely when territory enlarges, reinforcing the same principle from verse 15.
Deuteronomy 15:22 applies the same 'as a gazelle or a deer' rule to eating the firstborn animal.
Deuteronomy 14:26 allows rejoicing and eating whatever you desire before the Lord, similar to the freedom in slaughter here.
Deuteronomy 15:23 repeats the blood prohibition that follows this verse's slaughter allowance (see 12:16).
Leviticus 17:3-5 requires all slaughter at the sanctuary, contrasting with this verse's permission to slaughter in any town.
Genesis 9:3 grants permission to eat meat, which this verse applies to Israel's everyday slaughter.