Brihat Parashara Hora Shastra
विप्रान्तेवासिनः पत्नी पितरौ श्वशुरौ तथा । मातामहादयश्चिन्त्या एते च स्थिरकारका ॥ २१॥
From Ketu note wife, father, mother, parents-in law and maternal grand father. These are constant Karakatwas.
english translation
viprAntevAsinaH patnI pitarau zvazurau tathA । mAtAmahAdayazcintyA ete ca sthirakArakA ॥ 21॥
hk transliteration by Sanscript