Shiva Purana
बीजानि सप्त सप्तानां जिह्वानामनुपूर्वशः ॥ त्रिशिखा मध्यमा जिह्वा बहुरूपसमाह्वया ॥ २३ ॥
The seeds of the seven tongues are placed in order. The middle tongue with three crests calls forth many forms.
english translation
bIjAni sapta saptAnAM jihvAnAmanupUrvazaH ॥ trizikhA madhyamA jihvA bahurUpasamAhvayA ॥ 23 ॥
hk transliteration by Sanscript