Wherever Rahu is placed, Rahu works based on the strength of the dispositor. This is the foremost factor in analysing Rahu/Ketu. In this case, 7th lord determines how Rahu functions in the 7th house.
According to best astrologer in delhi, If the 7th lord is well placed and if the 7th lord is in good dignity with aspects from benefic, Rahu might just do fine. Rahu snatches the power of the dispositor and yields results to the native. The strength of Rahu is directly proportional to the strength of the dispositor.
However, the basic thing is, Rahu does delay the marriage of the native. Dominant and aggressive spouse is indicated. The spouse could be nervous and tensed for even petty issues. Love or arranged marriage is not decided by Rahu in 7th house because there are various other factors that determine love and arranged marriage and Rahu is not the only factor.
With Rahu in 7th and dispositor in 6/8/12, the results can disastrous as the dispositor strength is poor in that case. Troubled married life which might lead to separation and divorce is indicated. Spouse suffers physically continuously with one or other abdominal and reproductive organ issues, sickly disposition. Navamsa charts need to be checked for calculating level of suffering of spouse.
Secrets or facts are concealed in marriage and will be disclosed only after marriage and that will hamper the trust and mutual faith in relationship. Many other problems related with health are seen.
In such cases only Jupiter’s aspect could save the native.