Declension table of ?karmasūtra

Neuter	Singular	Dual	Plural
Nominative	karmasūtram	karmasūtre	karmasūtrāṇi
Vocative	karmasūtra	karmasūtre	karmasūtrāṇi
Accusative	karmasūtram	karmasūtre	karmasūtrāṇi
Instrumental	karmasūtreṇa	karmasūtrābhyām	karmasūtraiḥ
Dative	karmasūtrāya	karmasūtrābhyām	karmasūtrebhyaḥ
Ablative	karmasūtrāt	karmasūtrābhyām	karmasūtrebhyaḥ
Genitive	karmasūtrasya	karmasūtrayoḥ	karmasūtrāṇām
Locative	karmasūtre	karmasūtrayoḥ	karmasūtreṣu

Compound karmasūtra -

Adverb -karmasūtram -karmasūtrāt