Here Ketu is considered to be exalted. The native is wealthy, achieves a big position and spends on good works. If Rahu is in 6th house, along with Mercury, then the effect is even better. One has all the benefits and luxuries of life. If Ketu in 12th house is malefic then one buys land from an issueless person and the native becomes issueless himself. If one kills dogs Ketu gives malefic results. If 2nd house has Moon, Venus or Mars, Ketu gives malefic results.