Yes, at the time of conception. When one conceives, at that time it enters. Then the other possibility is at the fifth month. And then there is one more possibility which is rare, that is at the time of birth. So three possibilities, first at the time of conception. Most of the time it is at the time of conception. The fifth month, one soul goes and another soul enters, and similar exchange can happen at the time of birth. It is like, someone buys a car and sells it to someone else after nine months. That is also possible.