In my fieldwork on the Vedic schools of Maharashtra, the following verse was given to me by a vaidika describing the recitational permutations of the Veda.The verse is cited in Maheśvara's commentary on Amarakośa, Kāṇḍa 1, śabdādivarga, verse 4 (p. 35 of the edition Bombay 1907). The commentator does not give a source for this quotation.
jaṭā mālā śikhā rekhā dhvajo daṇḍo ratho ghanaḥ
ityaṣṭo vikṛti proktaḥ kramapūrva maharṣibhiḥ
When asked about the textual source, the vaidika wasn't able to produce a textual reference. He only said it was a quite popular verse. I haven't been able to trace it back yet. Does anybody know in which text this verse might be found?
-- Institut für Orient- und Asienwissenschaften Bibliothek Universität Bonn Regina-Pacis-Weg 7 D-53113 Bonn