Parallels for AB, 6, 12.4.0

Text line: athāha yad yathāchandasam pūrvayoḥ savanayor anvāha gāyatrīḥ prātaḥsavane triṣṭubho mādhyaṃdine 'tha kasmāj jāgate sati tṛtīyasavane triṣṭubho 'nvāheti //
no other annotations for this line