Shiva Purana
शिवावेशवशादेव शिवत्वमुपचर्यते ॥ मैत्र्यादयो गुणा गौणास्तस्मात्ते भिन्नवृत्तयः ॥ ४९ ॥
Because of the indwelling of Lord Śiva, one attains to Lord Śiva’s status. Friendship and other qualities are secondary and therefore you have different behaviors.
english translation
zivAvezavazAdeva zivatvamupacaryate ॥ maitryAdayo guNA gauNAstasmAtte bhinnavRttayaH ॥ 49 ॥
hk transliteration by Sanscript