Brihat Parashara Hora Shastra
उक्तस्थाने कुजार्किभ्यां पुत्रहीनः प्रजायते । दत्त पुत्रयुतो वापि सहोत्थसुतवान् भवेत् ॥ २७॥
If Mangal and Śani are in the said 9th, there will be no son, or a son will be obtained by adoption, or brother‟s son will come in adoption.
english translation
uktasthAne kujArkibhyAM putrahInaH prajAyate । datta putrayuto vApi sahotthasutavAn bhavet ॥ 27॥
hk transliteration by Sanscript