Shiva Purana
एकाकी च सदा नित्यं विरागी च विशेषतः ॥ तस्मात्त्वं तेन रुद्रेण मनो योक्तुं न चार्हसि ॥ ३४॥
He is an isolationist for ever. Particularly he is a detached fellow. Hence it does not behove you to get mentally entangled with him.
english translation
ekAkI ca sadA nityaM virAgI ca vizeSataH ॥ tasmAttvaM tena rudreNa mano yoktuM na cArhasi ॥ 34॥
hk transliteration by Sanscript