Shiva Purana

siva.sh/siva-purana/rudra-samhita/12/83

अथवा च शिवः पूज्यो मूलमेकं विशिष्यते ।। मूले सिक्ते तथा शाखास्तृप्तास्सत्यखिलास्सुराः।। ८३ ।।

sanskrit

Or it is enough if Śiva alone is worshipped. The root is the most important. When the root is watered, O gods, the branches are well-cared for.

english translation

athavA ca zivaH pUjyo mUlamekaM viziSyate || mUle sikte tathA zAkhAstRptAssatyakhilAssurAH|| 83 ||

hk transliteration by Sanscript