hayır

/xajɯr/

Cases

SingularPluralWhen to use it
nominativehayırthe benefithayırlathe benefitsthe plain dictionary form — the doer of the sentence
genitivehayırnıthe benefit'shayırlanıthe benefits'the owner — whose it is
accusativehayırnıthe benefit (as the object)hayırlanıthe benefits (as the object)a specific, known object — whom or what
dativehayırğato the benefithayırlağato the benefitsdirection or recipient — to where, to whom
locativehayırdaat / in the benefithayırladaat / in the benefitswhere it is; also having — mende bar, "I have it"
ablativehayırdanfrom the benefithayırladanfrom the benefitswhere it comes from; also "than" when comparing
When to use each case
nominative
the plain dictionary form — the doer of the sentence
genitive
the owner — whose it is
accusative
a specific, known object — whom or what
dative
direction or recipient — to where, to whom
locative
where it is; also having — mende bar, "I have it"
ablative
where it comes from; also "than" when comparing

The endings are the same ones the pronouns wear — that page explains when each case is used.

With an owner

One ownedSeveral owned
myhayırımmy benefithayırlarımmy benefits
yourhayırıngyour benefithayırlarıngyour benefits
his / herhayırıhis / her benefithayırlarıhis / her benefits
ourhayırıbızour benefithayırlarıbızour benefits
you all'shayırığızyou all's benefithayırlarığızyou all's benefits
theirhayırlarıtheir benefithayırlarıtheir benefits

The overlap in the last rows is real, not a mistake: hayırları can mean "his / her benefits", "their benefit", or "their benefits" — context decides.