Shiva Purana
अग्नेरग्रेऽक्षिपत्पुष्पद्वयं विप्रो ह्यतंद्रितः ॥ मनसा दक्षिणं पुष्पं तन्मेने पुत्रकामदम् ॥ २५ ॥
The alert brahmin offered two flowers to the sacrificial fire. He thought in his mind that the right side flower would yield a son.
english translation
agneragre'kSipatpuSpadvayaM vipro hyataMdritaH ॥ manasA dakSiNaM puSpaM tanmene putrakAmadam ॥ 25 ॥
hk transliteration by Sanscript