Shiva Purana
पुष्पैस्सुरगणान्सर्वान्फलैश्चापि तथा पितॄन् ॥ छायया चातिथीन्सर्वान्पूजयंति महीरुहाः ॥ १९ ॥
Trees honour and worship the gods through flowers, the Pitṛs through fruits, and the guests through shade.
english translation
puSpaissuragaNAnsarvAnphalaizcApi tathA pitRRn ॥ chAyayA cAtithInsarvAnpUjayaMti mahIruhAH ॥ 19 ॥
hk transliteration by Sanscript