Skanda-Māhapurāṇa, Suta Samhita, Muktikhanda, 3.40-47.:
Lord Shiv said- The devotees who worships other gods, attains Salokya etc. due to the difference in the superiority of the idol to be worshipped and the difference in the way he worships himself. Then, on becoming eligible for Krama moksha, he comes to me through Brahmaloka and Vishnuloka and attains Kaivalya after getting the Vedanta knowledge about God from me. The one who is not eligible for Krama moksha enjoys many pleasures in the world he worships and then gets a human body again. The person who thinks that 'I am Shiva present in all the idols and worships me in this way, he also attains my supreme form in the above mentioned order according to the superiority of the particular idol to be worshipped and the difference in the one who worships, and attains Kaivalya by taking knowledge from me situated in Uttam Apa. But the one who believes in me in all the idols, attains me sooner than the one who does not think so. O Vishnu! In the same way, by external actions also, by attaining me in a systematic manner and by taking the knowledge of Shiva from me, the soul becomes free, if the external action is performed with a pure heart.
Skanda-Māhapurāṇa, Suta Samhita, Muktikhanda, 3.27-31.:
Lord Shiva said- Hey Janardana! The person who worships you daily with devotion, this person with pure mind attains you and (after receiving teachings from you) in due course of time, finally attains me. In the best worlds, even after enjoying the sensual pleasures, the living being becomes liberated by attaining knowledge. Or if the mind is not very pure, then after attaining Sarupya, Samipya or Salokya, it can gradually move towards salvation (or can come back to the mortal world). Hey Vishnu! One who worships your other forms, gets liberated gradually after getting this closeness. O Achyuta- One who worships your symbol or idols, after attaining this Salokya, gradually attains salvation as per his feelings and finally after having vision of mine he attains Kaivalya through Tatvajnana.
Śri Shiva Gita, 13.32.:
Bhagawan Shiva said to Shri Ramchandra.: Just as Kailash, Vaikuntha, Satya-Loka, Swarga, etc. are divine worlds, similarly Moksha is not a world, Moksha is not a state of residing in any particular place. Nor does one have to go to any other world or places to attain it. Only the destruction of the knots of ignorance in the heart i.e. the end of the darkness of ignorance is salvation.
For more you can read this answer of mine. Which is universal for all Shrutis ans Smritis period.