MaitrAyans were descendants of kaThas . Again maitrAyana was a term used by group of 12 yaju shAkhAs .( 7 were the mUla maitrAyans + 5 were Upa maitrAyans ).
The gurU paramparA of maitrAyanI shAkhA is as follows .
charakAcharya imparted this yajurveda to kaThAcharya, One among his 12 shishya was maitrAyan maharshI .
maitrAyan maharshI impart this yajurveda to 7 shishyas.
1) mAnava ( author of mAnava kalpasutra )
2) vArAha ( maitreya , son of maitrAyan maharshI , author of vArAha kalpa sutra )
Again haridrAviyAcharya imaparted this yajurveda to 5 shishyas .Namely
5.3) GArgya ( son of garga rishI )
Among total of twelve , even today we have two shAkhAs surviving ,namely
1) maitrAyanI shAkhA in mAnava sub recension
It is prevalent in Maharashtra near the nagapur , the adherents are followers of mAnava kalpa sutra
2)maitrAyanI shAkhA in vArAha sub recencion
It is prevalent in Gujarat , mostly in community of mODha brAhmans. The followers are adherents of vArAha kalpa sutra.
Long time ago a mODha brAhmana ” SrI harshajI suta SrI rAmakrIshna shAstrI ” famed as ” pandita pAthaka ” had published a ritual manual of this shAkhA under title ” maitrAyanI Ahanika-darpana “.Unfortunately this book is out of print , only few copies are there of this book, mostly in private possession.
According to oral tradition of maitrAyans , dundubha shAkhA was prevalent in Kashmir desha , Ekeya in SaurAshTra kshetra ( A west-southern portion of Gujarat) . gArgya shAkhA was studied in present Vraja khetra ( present brija ) , AsurIna shAkhA was prevalent at gAndhAra ( present Afghanistan) . hAridrAvIya shAkhA was studied in marU desha i.e. present Gujarat+ Rajasthan ( possibly near the haridrA sarovara kshetra ).
Even in nirUkta we get a small fragment of hAridrAvIya shAkhA.
With slight variation in recitation style the rUdraM is common to both upashAkhAs.
It has two parts
namakaM is housed in 2 kAnda ( also known as madhyam kAnda ) , prapAThaka 9 , anuvAka 1-10.
In srauta context , both mAnava and vArAha srauta sutra employ this hymn in shatarUdrIya homa of agnichayan ritual.
In grihya context shatarUdrIya hymns are used in shulagava yagya and in ceremony of marriage . When groom with bride returns to his home , and counters special places then bramhA / Adhavaru recites some mantras .
chamakaM is housed in 2 kAnda ( also known as madhyam kAnda ) , prapAThaka 11 , anuvAka 1-6.
The srauta context of chamakaM is in vasoRdhArA homa of agnichayan ritual.
The hymn invokes, apart from agni and vishnu at the beginning, a pantheon of Vedic deities that are successively linked with Indra to enable the yajamAna or sacrificer/patron to successfully perform Vedic fire sacrifices .
OM asya rudrAdhyAyasya , maitrAyan R^ishI ,mahA rUdrO devtA , nAnA ChhandAñsI ,SrI sadAshiva prasAda siDdharThye jape viniyoga ||
With following mantrAs Avahan and dhyAna is done.
The last 57th mantra is not recited here .
It is recited at last of chamakaM.
The following verse of namakaM is recited here ,at the end of chamakaM.