Imam Jafar ibn Muhammad Al-Sadiq عليه السلام, said: "If one of you approaches his wife, let him remember Allah سبحانه وتعالى, for whoever does not remember Allah سبحانه وتعالى during intercourse, and a child is born from it, that child will have a share of Satan's partnership. This can be recognized by the child's love or hatred for us."