Brihat Parashara Hora Shastra
जलराशौ स्थितः खेटः शत्रुणा चाऽवलोकितः । शुभग्रहा न पश्यन्ति तृषितः स उदाहृतः ॥ १५॥
If a Grah is in a watery Rāśi and receives a Drishti from a malefic, but does not receive a Drishti from a benefic, the Avastha is called Trushit.
english translation
jalarAzau sthitaH kheTaH zatruNA cA'valokitaH । zubhagrahA na pazyanti tRSitaH sa udAhRtaH ॥ 15॥
hk transliteration by Sanscript