(in the pure Tradition of the Prophet pbuh)
Not practising coitus interruptus is preferable for a number of reasons:
First: It is harmful for the woman, since it reduces her pleasure by cutting it short. If she agrees to it, it still contains the following negative points.
Second: It negates part of the purpose of marriage which is enlarging the Muslim nation through offspring, as in the statement of the Prophet (pbuh): “Marry the loving and fertile, for I will compete with the other Prophets with the number of my followers.” [Abu Dawood, an-Nasaa’ee and others: Saheeh]. This is why the Prophet (pbuh) once referred to it as “minor infanticide” (and not because it is forbidden as infanticide is forbidden) when asked about it saying: “That is minor infanticide”. [Muslim, Ahmad and al-Baihaqi]. For this was preferable in the hadith narrated by Abu Sa’eed al-Khudhriy (rad) saying: “Coitus Interruptus was mentioned in the presence of the Prophet (pbuh) and he said: “Why would one of you do that? (note he did not say “let none of you do that”) Allah is the Creator of every single soul.” [Muslim]. In another version, he (pbuh) said: “You act and you act. There are no people destined to be from now until the day of Qiyama but that all of them will be.” [Muslim]