I have translated some details of a 1986 Hungarian leaflet on spiritual adop- tion, as follows. I beg you, give its parents love and courage to let their child live the life that you have given to it. Pray a decade of the Rosary every day. Neglecting the obligations of the vow, or not keeping one's promise are sins. Taking the vow can take place personally or solemnly.
Solemnity is a witness at the same time.
The point of time of the solemn vow ought to be a feast of Mary, if possible. It can take place in the course of a Mass or a prayer- meeting. The vow obliges, but it also strengthens. The primary goal of spiritual adoption is to save the life of a particular child by prayer and making sacrifices for it. It revives people's sensibility and sense of responsibility towards the value of human life.