Shiva Purana
न निर्गतं पुरा यस्मान्नारीणां कुलमीश्वरात् ॥ तेन मैथुनजां सृष्टिं न शशाक पितामहः ॥ २ ॥
Since the race of women had not emanated from the lord formerly, Brahmā could not produce creation through sexual intercourse.
english translation
na nirgataM purA yasmAnnArINAM kulamIzvarAt ॥ tena maithunajAM sRSTiM na zazAka pitAmahaH ॥ 2 ॥
hk transliteration by Sanscript