ŚBM, 13, 1, 2, 1.2 yad ayajuṣkeṇa kriyata imām agṛbhṇan raśanām ṛtasyetyaśvābhidhānīm ādatte yajuṣkṛtyai yajñasya samṛddhyai dvādaśāratnir bhavati dvādaśa māsāḥ saṃvatsaraḥ saṃvatsarameva yajñamāpnoti //