Shiva Purana
मत्स्यः कूर्मो वराहश्च नरसिंहोथ वामनः ॥ रामश्चान्यतमः कृष्णो भवानश्वमुखोपि च ॥ ५८ ॥
The fish the tortoise the boar the lion and the dwarf Rama is another Krishna and you are also Ashwamukha.
english translation
matsyaH kUrmo varAhazca narasiMhotha vAmanaH ॥ rAmazcAnyatamaH kRSNo bhavAnazvamukhopi ca ॥ 58 ॥
hk transliteration by Sanscript