Shiva Purana
यावत्कालं मुनिवरः प्राणायामपरायणः ॥ तौ दम्पती तदा तत्र स्वस्व कार्यपरायणौ ॥ २४ ॥
O excellent sage, the couple thus engaged in their activities remained there, alone.
english translation
yAvatkAlaM munivaraH prANAyAmaparAyaNaH ॥ tau dampatI tadA tatra svasva kAryaparAyaNau ॥ 24 ॥
hk transliteration by Sanscript