Shiva Purana
न कदाचिदवस्थानमावयोर्विप्रयुक्तयोः ॥ देवानां कार्यमुद्दिश्य लीलोक्तिं कृतवानहम् ॥ २० ॥
We can never stay apart from each other. It was for accomplishing the task of the gods that I made that joke.
english translation
na kadAcidavasthAnamAvayorviprayuktayoH ॥ devAnAM kAryamuddizya lIloktiM kRtavAnaham ॥ 20 ॥
hk transliteration by Sanscript