पूजोपकरणे दत्ते यत्किंचित्फलमश्नुते । प्रदक्षिणानमस्कारैः क्रमाच्छिवपदप्रदम् ३१ ।
If the devotee makes gifts of articles of worship he will get some benefit or other. By circumambulation and obeisance he will attain Śiva’s region gradually.
With jaggery (guḍa), fresh butter (navanīta), and ashes (bhasma), according to one's preference, The linga should be properly prepared and offered with effort, and then the ritual should be performed in accordance with the prescribed method.
अंगुष्ठादावपि तथा पूजामिच्छंति केचन । लिंगकर्मणि सर्वत्र निषेधोस्ति न कर्हिचित् ३४ ।
Some authorities have recommended the worship of the phallic emblem on the thumb etc. In these rites of phallic worship, there is no sort of prohibition whatsoever.