All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His Slave and Messenger.
Discharge of Mathy (the pre-ejaculatory fluid) due to weeping when you pray or supplicate Allaah is not considered incontinence, because it is not continuous and further it comes out due to the mentioned reasons. This means that the discharge of this fluid invalidates prayer and Wudhoo’. It also necessitates washing the affected part of the garment, to stay away from the relevant difference in opinions among the scholars.
Consequently, if this fluid came out during the night voluntary prayer, you have to renew Wudhoo’ to complete the prayer and perform other prayers.