A brahmana should earn money only through following means,
1)By teaching vedas and shastras (adyaapanam)
2)By officiating as a priest in yagya rites (yaajanam) and
3)By getting charity from others(prathigraham)
4) BY PICKING UP GRAINS IN THE FILEDS( SHILONJA VRITTI)
Earning by other means is v.v.very sinful to brahmanas……