Jataka Tattva · by Mahadeva
Chapter 7 · Mind, Learning and Children: the 5th House
पञ्चमविवेकः
ज्ञे सुते वा सुतेशे बलिनि केन्द्रे वा बुद्धिमान् ।
Say Mercury is in the 5th house. Or say the 5th lord is strong and in the 1st, 4th, 7th or 10th house. Then the person is intelligent.
पुत्रेशे केन्द्रे शुभान्विते धारणादिपटुः ।
Say the 5th lord is in the 1st, 4th, 7th or 10th house, joined by good planets. Then the person is clever at memory and the like.
सुतेशे कारके मृद्वंशादियुते शुभदृग्युते धारणादिपटुः ।
Say the 5th lord is a karaka (the planet that stands for a thing). It is in a mridu shashtyamsha (one-sixtieth part of a sign) or a like division…
सुतपे गोपुरादौ धारणादिपटुः ।
Say the 5th lord is in gopura amsha (a good rank of strength) or a like rank. Then the person is clever at memory and the like.