Why Bilpatre is offered to Lord Shiva?

According to the ancient hindu scriptures, it is said that Bilpatre emerged from the sweat of Lord Shiva’s wife -Goddess Parvati. One of the other reasons that bilpatre is offered to Lord Shiva is its shape. it’s trifoliate leaf represents hindu trinity of Brahma, Vishnu, Mahesh and Lord Shiva’s three eyes. As Bilpatre tree has a cooling effect, it is offered to the hot-headed deity, in the hope that he will remain calm and never open his third eye! It is also said that if one touches bilpatre, he will be freed from all the negativities, ailments and sins of his life. thus in every Shiv pooja bilpatre leaves are a must.