The most crucial aspect of Sanatan Dharma is the offering of jal on the Shivaling, as it symbolizes purity and devotion towards Shiva. Offering jal is Shiv-seva, more than just worship. When done correctly, the blessings of Shiva are accompanied by those of Mata Paravti and Ganu Maharaj, who express Shakti and Siddhi.
Offering Jal on Shivling is best during the early morning hours, ideal before sunrise, as this time is considered auspicious and enhances the spiritual benefits of the rituals. Shivrati and Maha Shivarati are also the best times when Shiv bhakts receive blessings from Bhole Baba and fulfill their wishes.
No glass lota (water pot) or plastic. Water or Gangajal should always be offered in a copper or brass pot, while milk should always be offered in a steel pot. With Akshat (raw rice), Kaale Til (black sesame seeds), white flowers, curd, honey, ghee, sandalwood paste, fruits, etc., Belpatra is a favorite of Shiva.
The most beneficial directions to offer jal to the Shivling are always north and east. Because the south side is indicative of death and dissolution, it is claimed that one should constantly avoid it. As Ganesh removes barriers, always remember to offer him the jal first. He is on the left side of Shiva.
Never pour jal too quickly or carelessly, and always use your right hand to do so while maintaining the appropriate height from the Linga while chanting the "Om Namah Shivaya" mantra or other Vedic mantras like "Namah Parvati Pati Har Har Mahadev." Remember to be grateful at all times as you pour Shivling jal.
Since Tulsi leaves are sacred to Lord Vishnu, one should never offer them. One should also never provide boiling or unclean water. Avoid performing abhishek at Sandhya Kaal (evening) or Rahu Kaal (an unlucky time of day, not a suitable time to begin any good deed). Never go all the way around the Shivling.