Shiva Purana
शिवोपि पृष्ठतो लग्नो ह्यायातः शूकरस्य हि ॥ तयोर्मध्ये तदा सोयं दृश्यते शृंगमद्भुतम् ॥ ४४॥
Lord Shiva has also come behind the pig Between the two of them then a wonderful peak appears.
english translation
zivopi pRSThato lagno hyAyAtaH zUkarasya hi ॥ tayormadhye tadA soyaM dRzyate zRMgamadbhutam ॥ 44॥
hk transliteration by Sanscript