Praise be to Allah, and may Allah’s peace and blessings be upon the Messenger of Allah, his family and his companions. Wa alaikum assalam wa rahmatullahi wa barakatuh. As to what follows: In response to your question, we say:   Firstly what is the pre-seminal fluid? It is the sticky, clear fluid which is emitted when a person is aroused. Emissions of this fluid does not nullify fasting. However, a Muslim must ensure that he does not reach this state.