Phaladeepika
भ्रष्ठस्य तुङ्गादवरोहिसंज्ञा मध्या भवेत्सा सुहृदुच्चभागे । आरोहिणी निम्नपरिच्युतस्य नीचारिभांशेष्वधमा भवेत्सा ॥ ५६॥
The Dasa of a planet fallen from exaltation is termed Avarohini or descending; while that of a planet in a friend's or exaltation house is named Madhya or middling. The Dasa of a planet proceeding from his depression is called Arohini or rising. The Dasa of a planet that is actually in his depression or inimical Rasi or in his depression or inimical Amsa is termed Adhama or worst.
english translation
bhraSThasya tuGgAdavarohisaMjJA madhyA bhavetsA suhRduccabhAge । ArohiNI nimnaparicyutasya nIcAribhAMzeSvadhamA bhavetsA ॥ 56॥
hk transliteration by Sanscript