Brihat Parashara Hora Shastra
अपुत्रता तथाऽर्केज्यराहुभिर्बहुपुत्रता । चन्द्रेणैकसुतस्तत्र मिश्रैः पुत्रो विलम्बतः ॥ २५॥
About Sons. If Śani, Candr and Budh are together in the 9th from one of the said places, there will be no son at all, while Sūrya, Guru and Rahu so placed will give a number of sons.
english translation
aputratA tathA'rkejyarAhubhirbahuputratA । candreNaikasutastatra mizraiH putro vilambataH ॥ 25॥
hk transliteration by Sanscript