Shiva Purana
ऋभुं सनत्कुमारञ्च पूर्वमेव प्रजापतिः ॥ सर्वे ते योगिनो ज्ञेया वीतरागा विमत्सराः ॥ २० ॥
The creator had already created Ṛbhu and Sanatkumara. All such yogīs should be understood to be free from attachment and envy.
english translation
RbhuM sanatkumAraJca pUrvameva prajApatiH ॥ sarve te yogino jJeyA vItarAgA vimatsarAH ॥ 20 ॥
hk transliteration by Sanscript