Brihat Parashara Hora Shastra
आरूढात् सप्तमे राहुरथवा संस्थितः शिखी । कुक्षिव्यथायुतो बालः शिखिना पीडितो`थ वा ॥ २३॥
The 7th Bhava from Pad (up to Sloka 27). If Rahu, or Ketu is placed in the 7th from Lagn Pad, the native will be troubled by disorders of the stomach, or by fire.
english translation
ArUDhAt saptame rAhurathavA saMsthitaH zikhI । kukSivyathAyuto bAlaH zikhinA pIDito`tha vA ॥ 23॥
hk transliteration by Sanscript