By offering the Shaligrama stone to a Brahmin who has realised the Self Or by performing countelss Yagnas One acquires great virtue Such virtue can be earned by Offering a single Bilva leaf to Lord Shiva.
The virtue earned by donating a thousand elephants Or by performing a hundred Aswamedha sacrifices Or by giving away in a marriage a countless daughters Such virtue can be earned by offering a single Bilva leaf to Lord Shiva.