Manusmriti

siva.sh/manusmriti/4/95

श्रावण्यां प्रौष्ठपद्यां वाऽप्युपाकृत्य यथाविधि । युक्तश्छन्दांस्यधीयीत मासान् विप्रोऽर्धपञ्चमान् ॥ ९५ ॥

sanskrit

Having performed the Upakarman according to the prescribed rule on (the full moon of the month) Sravana, or on that of Praushthapada (Bhadrapada), a Brahmana shall diligently study the Vedas during four months and a half.

english translation

zrAvaNyAM prauSThapadyAM vA'pyupAkRtya yathAvidhi | yuktazchandAMsyadhIyIta mAsAn vipro'rdhapaJcamAn || 95 ||

hk transliteration by Sanscript