Shiva Purana
क्वचिद्वालुकया व्याप्तमाकंठांतः प्रवेशया ॥ क्वचिद्दुष्टाम्बुना व्याप्तं क्वचिच्च करिषाग्निना ॥ १५ ॥
Some places are full of fine sand where the persons sink up to the neck; elsewhere it is full of stinking muddy water and some places are covered with burning balls of dry cowdung.
english translation
kvacidvAlukayA vyAptamAkaMThAMtaH pravezayA ॥ kvacidduSTAmbunA vyAptaM kvacicca kariSAgninA ॥ 15 ॥
hk transliteration by Sanscript