Shiva Purana
ग्रामण्यश्च तथा यक्षान्यातुधानांस्तथा हयान् ॥ सप्तच्छन्दोमयांश्चैव वालखिल्यांश्च पूजयेत् ॥ ३४ ॥
The villagers also saw the yakshas and the horses One should worship the seven chandas and the Valakhilyas.
english translation
grAmaNyazca tathA yakSAnyAtudhAnAMstathA hayAn ॥ saptacchandomayAMzcaiva vAlakhilyAMzca pUjayet ॥ 34 ॥
hk transliteration by Sanscript