Brihat Parashara Hora Shastra
एकादशादग्रजस्य तृतीयात्तु यवीयसः। सुतस्य पंचमे विद्यान्मातुश्चतुर्थभावत्॥ १९॥
the 11th longevity of elder brothers and sisters, the 3rd longevity of younger brothers and sisters, the 5 th the longevity of sons, the 4th longevity of mother
english translation
ekAdazAdagrajasya tRtIyAttu yavIyasaH। sutasya paMcame vidyAnmAtuzcaturthabhAvat॥ 19॥
hk transliteration by Sanscript