Life has sixteen (16) important sanskaars. Among these, the most important ones are the wedding sanskaar and the conception. If there is a mistake in any of these samskaars, one has to bear its burden throughout one's life.
After the wedding, there cannot be change of husband or wife but if there be any change (second marriage), there will remain a scar in the life. Second marriage is seldom happy and peaceful. It is because of difference of opinions and tensions and it leads to a life of compulsion.
And if there is a mistake in conception sanskaar, it leads to birth of a disabled or mentally handicapped or with any kind of deformity, then one can neither throw it nor can one be happy and peaceful in bringing it up. I am not saying that one does not look after the handicapped offspring but I am saying that such an offspring should not be conceived. It is, therefore, very essential to have the knowledge of wedding and conception sanskaars.
Wedding sanskar: Before fixing the wedding, the birth charts of the boy and girl should be matched.